Select the correct answer.
The chart gives the number of cases of pollo between 1937 and 2011. Polio is an infectious disease that causes paralysis and sometimes death.
The pollo vaccine was introduced in 1955. What can be concluded about the polio vaccine?
A. It was successful eradicating polio from the United States.
B. It has no effect on the number of polio cases in the United States.
C. It reduced the number of polio cases, but deaths from polio stayed constant.
D. It initially lowered the number of polio cases, but the number of US cases remain high.
Answers
Answer:
A is the correct option. Looking at the chart after the vaccine, the number of cases dropped drastically. It was officially declared eradicated in 1979 in the United States.
It was successful eradicating polio from the United States can be concluded about the polio vaccine. Hence, option A is correct.
What is the use of polio vaccine?Since 2000, only the inactivated poliovirus vaccine has been administered in the United States. If a person receives all the prescribed doses of IPV, nearly everyone is protected from the severe sickness brought on by the poliovirus.
In 1955, the inactivated polio vaccine (IPV), administered as an injection, became widely available. Oral polio vaccination (OPV), which is more practical, was administered as liquid drops into the mouth. It came about in 1961. OPV was advised for use in the US from 1963 to 2000, a period of approximately 40 years.
Salk's vaccine was eventually replaced by the oral vaccination, and by 1968, neither American healthcare providers nor American pharmaceutical corporations were using it.
Thus, option A is correct.
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Related Questions
The population density of the Philippines is 798 people per square mile. If
many refuges arrive from a neighboring country how will they affect the
population density?
O A. Cannot be determined.
O
B. The population density will decrease.
C. The population density will increase.
D. The population density will remain the same.
Answers
The answer is option C - "The Population Density will increase"
Explanation:
If refugees arrive from a neighboring country to Philippines, it will result in more number of people living on the island. However, the land area of the country remains the same, since there is no change to that. Let's assume that the total land area of Philippines is "x" square miles. And assume that there are "y" number of people living on the island already. Let's also assume that "z" number of people arrive as refugees.
From the question, we know that "y" / "x" = 798. This is the existing population density.
Now, if refugees arrive, total number of people living on the island will become "y+z".
Since "y+z" > than "y",
=> "y+z"/"x" will be greater than "y"/"x", i.e. it will be greater than 798.
Therefore, the population density (i.e. 798) will increase.
Does the continental divide separate Canada and the US
Answers
The continental divide mostly doesn't separate the territories of the United States and Canada.
Explanation:
Across the North American continent there are several continental divides. When the term continental divide is used, mostly it is used for the great continental divide. The great continental divide runs along the eastern part of the continent, and with its stretching in roughly north northwest-south southeast, it doesn't form the boundary of the United States and Canada.
Apart from the great continental divide, the other five are:
LaurentianArcticSt. LawrenceEasternGreat BasinPart of the boundary between the United States and Canada is indeed formed by some of the divides, namely the Laurentian and St. Lawrence, but they occupy such small parts of the border that makes it totally insignificant, and it is more of an intersection, that actually having a continuity.
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Describe the relationship of a dependency to its dominant country.
Answers
Final answer:
The relationship between a dominant country and its dependency is characterized by an imbalance where the dominant (core) country benefits at the expense of the dependency (periphery), reinforcing patterns established during historical colonial periods that limit the development of the dominated country.
Explanation:
The concept of imperial dynamics explores the relationship between a dominant country and its dependency, which can manifest in various forms including a colony, protectorate, or mandate. This relationship is central to dependency theory, which posits that the global economic system often disadvantages developing regions and countries, creating a dependency on more developed nations. These dependencies often stem from historical colonial trade patterns that normalized the production of low-profit goods in the dominated country, maintaining systems beneficial to the colonizer.
Core countries, with advanced political and economic systems, utilize resources from periphery countries to maintain their status. Dependency theory suggests that the unequal benefits of international trade and economic relations reinforce this imbalance. As a result, the benefits of trade between developed and developing countries often overwhelmingly favor the developed nation.
Additionally, dependency theorizes that industrialized nations influence the fate of developing nations by controlling markets, capital flow, and trade terms, which limits the economic growth and development of the dependent countries. Export industries in developing nations tend to have minimal impact on the rest of the economy, and deficiencies in infrastructure like transportation and financial sectors, as well as human capital, restrict overall economic progress.
Geographers use the concept of regions when
A. creating new types of map projections.
B. describing physical and cultural characteristics.
C. determining absolute location.
D. examining plate tectonic trends.
Answers
The concept of regions is used for describing physical and cultural characteristics.
Explanation:
The term region is one that is very commonly used in geography, in pretty much all of its subdivisions. The reason for that is that this term represents an area that is either physically marked or it is marked by some human characteristic. Those two factors are the ones that are used the most when it comes to describing a region.
A region that is describing physical characteristics of an area is one where the physical features make an area specific and different from its surroundings. When there is a cultural region in question, the area is unique because of the cultural traits of the humans that live there.
Examples of physical regions are:
Tikvesh ValleyTibetan PlateauAmazon BasinExamples of cultural regions are:
Basque countryIsle of ManLaplandEastern EuropeLearn more about the human activity in the Amazon https://brainly.com/question/13236656
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Decide whether the statement is true or false.
11.) If a quadrilateral is a rectangle, then it is a parallelogram.
12.) If a quadrilateral is a parallelogram, then it is a rhombus.
13.) If a quadrilateral is a square, then it is a rhombus.
14.) If a quadrilateral is a rectangle, then it is a rhombus.
15.) If a rhombus is a square, then it is a rectangle.
Answers
Answer:
11. true
12. true
13. false
14. false
15. true
Explanation:
11. rectangle- a figure with four straight sides and four right angles, especially one with unequal adjacent sides.
parallelogram- a four sided figure with opposite sides parallel.
12. rhombus- a parallelogram with opposite equal angles and four equal sides. (usually acute and obtuse opposite equal angles but includes squares.)
13. square- a figure with four equal sides and four right angles
14. ^^ refer back to rectangle and rhombus definitions.
15. ^^refer back to definitions of rhombus, square and rectangle.
Quadrilaterals and their properties.
Statement 11: True. If a quadrilateral is a rectangle, then it is a parallelogram. This is because a rectangle is a special type of parallelogram where all angles are right angles.
Statement 12: True. If a quadrilateral is a parallelogram, then it is a rhombus. This is because a rhombus is a special type of parallelogram where all sides are equal.
Statement 13: True. If a quadrilateral is a square, then it is a rhombus. This is because a square is a special type of rhombus where all angles are right angles.
Statement 14: False. If a quadrilateral is a rectangle, it is not necessary that it is a rhombus. A rectangle is a parallelogram with right angles, but it does not have all equal sides like a rhombus.
Statement 15: True. If a rhombus is a square, then it is also a rectangle. This is because a square is a special type of rhombus with right angles.
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9. What subspecialty of Earth science studies patterns of weather over a long period of time?
a. geochemistry b. climatology C. tectonics
d. paleontology
Answers
Answer:
B. Climatology
Explanation:
Earth science studied the patterns of weather over a long period of time is called climatology. Weather is shorter phenomenon and day to day activities whereas climate is the longer and average climatic conditions over a period of 30 years. Climatology deals with the study about the temperature, precipitation, humidity, and pressure in the specific area in the world. Tectonics is the branch of the geomorphology which deals about the inner and outer surface of the earth.
Women make up 45% of the world’s workforce. What percentage of these women live in poverty?
A.
25%
B.
40%
C.
70%
D.
85%
Answers
Answer:
70%
Explanation:
Synonym for Mansa musa
Answers
Answer:
sultan
Explanation:
To use remote sensing correctly, a geographer needs to be physically at the place of study.
Answers
Answer:
yes
Explanation:
A geographer does not need to be physically present to use remote sensing, which is a method of collecting data from a distance using aerial platforms. This technique is valuable for analyzing the Earth's surface and tracking changes, but it should be complemented by field data for verification.
To address the student's question directly, remote sensing does not require a geographer to be physically present at the location being studied. Instead, remote sensing refers to the technique of acquiring data about the Earth's surface through the use of aerial platforms such as satellites, airplanes, or drones. This allows geographers to collect data and analyze various aspects of an area from a distance.
Remote sensing is particularly valuable because it provides imagery and information about the physical and human characteristics of a place, such as land use and landscape changes, which can be especially useful in inaccessible or vast areas. It leverages the interaction between earth materials and the electromagnetic spectrum, extending our capabilities to see beyond the visible range. For example, analyzing different wavelengths can help identify vegetated areas using the infrared spectrum.
However, it is important to mention that remote sensing serves as a complement rather than a replacement for traditional field studies. For the data obtained to be considered reliable, it often needs verification through field data collection. While remote sensing offers a broad view and can track changes over time, field verification helps ensure accuracy and provides a more detailed analysis at the ground level.
why is it important to know the source of energy in convection currents to understand plate tectonic theory
Answers
Its important to know the source of energy in convection currents because it is what drives the movement of the plates, formation of plate boundaries, and hot spots.
Explanation:
The convection currents are currents that occur in the mantle layer. The prime reason as to why they appear is the difference of heat and pressure between the upper and lower mantle. The energy itself exist because of the core of the Earth, as it is very hot and it has extremely high pressure, so it heavily influences the mantle layer above it.
The importance of understanding the energy source of convection currents is seen in that through it we can understand why we have plate boundaries at some places and not in others, why are spreading zones occurring, and why hot spots occur in the middle of the plates, far away from the boundaries. By understanding these things, we can understand the plate tectonics theory, thus the motion of the plates on Earth's surface.
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Answer:
The Earth's crust and upper part of the mantle are broken into large pieces called tectonic plates. ... The plates move because of convection currents in the Earth's mantle. These are driven by the heat produced by the decay of radioactive elements and heat left over from the formation of the Earth.
Explanation:
descripe the troposphere and stratosphere and mesosphere.be sure to include what altitude one culd find this layer and what is found in the layer
Answers
Answer:
Troposphere, stratosphere and mesosphere are the layers of Earth's atmosphere. Their features are as it follows in the explanation bellow.
Explanation:
Troposphere is the lowest layer of atmsphere, and this is the area where all weather phenomenon and life happen. Troposphere goes up to 18 kilometers in height. This is also the densiest layer of atmoshere where almost all water, clouds and air processes exist. Troposhpere is the only one sphere where life is possible.
Stratosphere is the layer between 18-20 km up to 50-55 km in height, above the Earth's surface. This layer is well known for great concentration of ozone (somewhere between 20 and 25 km), and that area is called - ozone layer. Ozone is very important because it absorbs most of the Sun's ultraviolet radiation.
Mesosphere is the layer just above the stratosphere and it spreads between 50-55 km up to 80-90 km. Mesopshere is characterized by significant temperature drop (lower parts has around 0 degrees and uppermost parts are very cold, at -90 degrees Celsius). Upper segments of mesopshere is known as ionosphere. That is the layer with charged iones, and it is well known for formation of polar light (aurora)
Providence canyon, often referred to as Georgia’s Little Grand Canyon, is located approximately 150 miles southwest of Atlanta in a portion of the state known as the Coastal Plain. The Clayton Formation found here is a red-orange sandy clay that is exposed near the top of the canyon. This is the contact area between the lower layer, called the Providence, and the Clayton is irregular and uneven. What does this contact area between the two layers or strata indicate?
Answers
Answer:
It is an unconformity, which represents a gap in the geologic record and a period of erosion.
Explanation:
Even Alfred wegener acknowledgement that the apparent fit of continents or matching of continental coastlines was cruel at best. Propose an explanation for this inexact fit
Answers
The matching coastlines of the continents of Alfred Wegener was not seen as serious as it was not a real proof of anything, and it also was very limited.
Explanation:
Alfred Wegener is the person that developed and promoted the continental drift theory. His theory was based around numerous evidence, and while some of those evidence were good indicators on their own, some were not, and they were not good enough on their own.
One of the evidence were the matching coastlines of the continents. This on its own wasn't good enough evidence, as it could have easily been just a coincidence that some coastlines match. Also, this was based on the matching coastlines of only two continents, Africa (its western part) and South America (its eastern part). The other continents didn't seemed to have matching coastlines as these two, which was just another reason for the other scientists to claim that it is a coincidence.
Some of the other evidence that Wegener used for his theory were:
fossilsmid-ocean ridge (spreading zones)matching rock strata from different continentsLearn more about the problems the continental drift theory faced at first https://brainly.com/question/7435218
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Final answer:
The inexact fit of continents as observed by Wegener is due to past paleogeography and tectonic activity altering continental coastlines since the breakup of Pangaea. Wegener's initial absence of a convincing mechanism for continental movement contributed to skepticism, until plate tectonics provided a solid explanation for the continents' drift.
Explanation:
The inexact fit of continents as proposed by Alfred Wegener in his continental drift hypothesis can be attributed to several factors. Wegener's observation that the coastlines of some continents, such as South America and Africa, appeared to fit together like a jigsaw puzzle, served as one of his initial pieces of evidence. However, paleogeography and tectonic activity have altered the shape and position of continental coastlines since the breakup of the supercontinent Pangaea. This resulted in the inexact match that we observe today. Moreover, Wegener struggled to provide a convincing mechanism for continental movement, initially suggesting forces like Earth's rotation (poleflucht) and tidal forces, which were later proven to be insufficient. Ultimately, the development of plate tectonics, with the understanding of seafloor spreading and tectonic plate interactions, offered a more concrete explanation for the movement of continents.
Earths core is a solid due to.
A. The large amount of iron
B. Extreme heat
C.High pressure
Answers
Answer:
c
Explanation:
the high pressure in the core actually makes the molten rock solid
Karen wants to rent a boat and spend less than $57. The boat costs $7 per hour, and Karen has a discount coupon for $6 off. What are the possible numbers of
hours Karen could rent the boat?
Use t for the number of hours.
Write your answer as an inequality solved fort.
Answers
Answer:
t7-6= less than 57
Explanation:
you need to isolate the variable (t)
t7 divided by 7= 57 divided by 7
times seven and divided by seven cancel each other out, so you would divided 57 by seven, witch is 8.14.
don't know for sure but i hope it helped!!!!
What are the three major river systems in South America
Answers
Answer:
Amazon, Orinoco, and Paraguay
Explanation:
Answer:
The Amazon
Orinoco
Paraguay/parana
Explanation:
The Amazon happen to be one of the largest river in the world with space of about 7million square kilometers
Orinoco is about 2736 kilometers and flows from the north of the Amazon
Paragua/Parana
Flows from the southeastern Brazil and covers about 2.8 million kilometers
Where does the thermal energy to melt Earth's inner rock come from?
Answers
The thermal energy to melt Earth's inner rock comes from the initial collapse and formation of the planet, as well as from the radioactive decay of unstable elements within the Earth.
Explanation:The thermal energy to melt Earth's inner rock comes from two sources. Firstly, it comes from the initial collapse and formation of the planet, where gravitational potential energy is converted into thermal energy. Secondly, it comes from the radioactive decay of unstable elements within the Earth, such as uranium, thorium, and potassium. These radioactive decays release energy, which contributes to the Earth's molten interior.
What is the capital of egypt
Answers
Answer:
Cairo is Egypt's capital city and also the most populous city in the country. The city is located in Lower Egypt which is a section of Egypt encompassing the fertile Nile delta and the land between Upper Egypt and the northern Mediterranean coast.
Explanation:
Answer:
Cairo is Egypt's capital city
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if you can sub to vegangaming on yout_ube
The purpose of a political map is to identify
a Coastlines
b. Governmental boundaries
C. Mountain Ranges
d. Populations
Answers
Given that 10m = 14n , find the ration of m:n in simplist from
Answers
Answer:
5:7
Explanation:
You divide both sides by the same number to find the least common multiple. ex) 10 and 14 are both divisible by 2.
10÷2=5
14÷2=7
Therefore 5m = 7n
Final answer:
Given that 10m = 14n, the ratio of m to n in simplest form is 7:5, after dividing both terms by their greatest common divisor, which is 2.
Explanation:
To find the ratio of m to n in simplest form given that 10m = 14n, we first rewrite the equation in the form of a ratio:
m/n = 14/10
Now we simplify the ratio by dividing both the numerator and the denominator by their greatest common divisor, which is 2:
m/n = 7/5
Therefore, the simplest form of the ratio m:n is 7:5.
Select the items below that describe natural resources.
used in everything that we make
come from nature
include minerals, air, and sunlight
renewable or nonrenewable
describe the amount of people in the workforce
Answers
Look at the diagram and then answer the following questions.
The process shown in this diagram is (Convection: Subduction: Conduction)
Letter A in the diagram indicates a (Mid-ocean ridge: Volcano: Deep-Ocean trench)
The oldest area in the diagram is (A, B, C, D)
Answers
1. The process shown in the diagram is Subduction process.
The Subduction process is a geological process where the oceanic lithosphere is been recycled into the Earth's mantle at the convergent boundaries.The process is caused when tectonic plates slides underneath another one.2. The Letter A in the diagram indicates a Deep-Ocean trench.
The deep ocean trenches are usually long.3. The oldest area in the diagram is B. because the plate has been in long existence and slides underneath another plates.
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Answer:
Answer:B,C,B
Explanation:
What is the most recent addition to the list of Eastern Europe's polluters?
acid rain
cars
industry
radioactivity
Answers
Answer:
i'd say the answer would be cars
after 2004, Polish exports increased when _____.
Answers
After 2004, Polish exports increased after the country entered the European Union.
Explanation:
Poland, as multiple other countries of Central and Eastern Europe, has communist past. When the communism fell, Poland struggled for some time, as the country needed to change a lot in its functioning, especially the economy and the development of relations with other countries. Despite the country doing everything right, it was still not able to reach its potential because of the limitations.
This all changed when the country entered the European Union in 2004. The borders opened up, so Poland had access without any limitations with the other countries of the EU, and through it with lot of markets across the world because of the EU's trading agreements. Poland used the opportunity, so its exports increased significantly, and since there was larger market and demand, the Polish companies were producing more as well, skyrocketing the economy.
Countries that experienced similar development as Poland are:
HungaryLithuaniaLatviaEstoniaCzechiaLearn more about the European Union https://brainly.com/question/9198153
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Answer:
Poland joined a trade network with other nations
Gradpoint
square root of 55+67
Answers
Answer:
11.04
Explanation:
55+67 = 122
sqrt of 122 is 11.04
Answer: 11.04536
Explanation:
Firstly you add up the number
55+67= 122
Which we know the square root of 121 is equal to 11
What is the name of a tropical region that has a distinct wet and dry season?
desert
steppe
savanna
tundra
Answers
Answer:
savanna
Explanation:
Tropical savanna climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and typically a pronounced dry season.
An article was sold for? $7575 but now it's increased by 10%
Answers
The value of the article will now increase to $8,332.50.
Explanation:
The article was originally sold for $7575 and is now its value has increased by 10%.
10% of $7575 = $7575 * 10/100 = $757.50.
If we add the above 10% to the value of the article, we will arrive at the current value of the article.
Hence, current value of the article = $7575 + $757.50 = $8332.50
This can also be arrived at by multiplying $7575 by 110%, i.e. $7575 * 110/100 = $8332.50, hence arriving at the same answer.
PLEASE HELP !!
The figure shows three right triangles. Triangles ABD, CAD, and CBA are similar.
Theorem: If two triangles are similar, the corresponding sides are in proportion.
Using the given theorem, which two statements help to prove that if segment BC is x, then x2 = 74?
1) Segment BC ⋅ segment DC = 49
Segment BC ⋅ segment BD = 35
2) Segment BC ⋅ segment DC = 49
Segment BC ⋅ segment BD = 25
3) Segment BC ⋅ segment DC = 25
Segment BC ⋅ segment BD = 35
4) Segment BC ⋅ segment DC = 25
Segment BC ⋅ segment BD = 49
Answers
Answer:
2)
Segment BC ⋅ segment DC = 49
Segment BC ⋅ segment BD = 25
Explanation:
Just did it and it was right
Segment BC ⋅ segment DC = 49
Segment BC ⋅ segment BD = 25 are the two statements help to prove that if segment BC is x, then x2 = 74. Hence, option B is correct.
What is right triangles?A triangle is said to be right-angled if one of its angles is exactly 90 degrees. The sum of the other two angles is 90 degrees. Perpendicular and the triangle's base are the sides that make up the right angle. The longest of the three sides, the third side is known as the hypotenuse.
Because carpenters must ensure that walls are straight and corners are square, the notion of right triangles is applied. The lengths of the sides of a right triangle are related by the Pythagorean Theorem. Additionally, carpenters utilize curves to build arches above windows and doors by utilizing the characteristics of circles.
To ensure that walls are straight and level, carpenters employ the right triangle principle.
Thus, option B is correct.
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How does agriculture impact population
Answers
Explanation:
Hunters and gatherers lived off the land, without agriculture and reached a total population of no more than around 10 million. Farming allowed people to settle down and allowed populations to grow. The Green Revolution and the Industrial Revolution are heavily dependent on fossil fuel.
Answer:
Land a factor of production is unchanged, but demand is increasing due to increase in population.
Explanation:
Agriculture allow people to settle down and allow populations to grow.
The Europeans practiced
against the Native Americans.
Race and Ethnicity: Select the best answer from the choices provided.
O A.
assimilation
O B.
segregation
O
C.
pluralism
OD. genocide
THE
Reset
Next
Answers
Assimilation was practiced by the Europeans against the Native Americans.
Explanation:
Cultural Assimilation is referred to as the process where small groups or culture form a dominant group. The cultural assimilation was an effort made by the Europeans to convert the culture of Native Americans into the culture of European- American in between 1790 and 1920.
United States also established boarding school for the Native American and the children had to attend the school. In case of cultural assimilation a person's language or a group of person's language and culture tries resemble with another group.
Answer: The answer is D. Genocide
NOT A. assimilation
Prejudice and Racism: Quiz
The Europeans practiced _____ against the Native Americans.
Explanation:
Europeans practiced genocide against the Native americans.
Genocide means: killing of a large number of people from a nation or ethnic group aiming to destroy that nation or group.
Assimilation means: the process whereby individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society.