Answer:
The perecentage of guanine is 30%
Explanation:
the DNA from any cell of all organisms should have a 1:1 ratio (base Pair Rule) of purine bases [for the DNA cytosine, thymine and for the RNA uracil] and pyrimidine bases [guanine and adenine for RNA and DNA]. The amount of guanine should be equaled to cytosine and the amount of adenine should be equaled to thymine. You can follow this rule in both strands of the DNA.
Answer:
The perecentage of guanine is 30%
Explanation:
Hope this helps!!!
Forever friend and helper,
Cammie:)
What usually happens as more forests are converted to urban developments?
A.lumber production decreases
B. Lumber demand decreases
C. The supply of lumber goes up
D. The price of lumber goes down
Answer:
b
Explanation:
need increases
Option A. As forests are converted to urban developments, lumber production tends to decrease, leading to potential long-term supply issues and increased lumber prices due to the inelastic supply and higher demand.
When more forests are converted to urban developments, typically, lumber production decreases because less forest area is available for timber harvesting. As a result of reduced lumber production, the supply of lumber does not meet the rising demand post-urbanization, especially if urban development leads to increased construction.
This scenario usually leads to increased lumber prices due to inelastic supply in the short term and the demand exceeding the available supply. Additionally, as there is less incentive for suppliers from distant locations to bring additional lumber, long-term supply issues may arise.
Hence, the correct answer to the question is A. lumber production decreases. Deforestation, which is fueled by an expanding global population and urban development, can lead to a decline in available lumber, consequently affecting its price.
how do you offspring resulting from sexual reproduction differ from offers resulting from asexual reproduction
Answer:
One parent or two? That is the main difference between sexual and asexual reproduction. Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.
Explanation:
(20 Points) Which statement explains the most common relationship between sleep deficiency and substance abuse?
-It can cause one to crave alcohol.
-It can increase one’s stress level.
-It can lead one to use stimulants.
-It can lower one’s inhibitions.
The statement explains the most common relationship between sleep deficiency and substance abuse is that it can lead one to use stimulants. Thus, option C is correct.
What is stimulants?
The medicine that has been used to become more active than normal life and the term stimulants has been overarching term which has been the covers of the several drugs that include that has been increased activity of the nervous system present in the center.
Analgesia has been known as an analgesic drug which has been used as the pain reliever or it has been also known as the painkiller. The group of the drugs that has been used to the relief severe pain has been known as the analgesia. The side effects of analgesia that has the long term use of the analgesia can cause damage to lever and kidney.
There are several conditions in which has the analgesia are analgesic are given and these are after the the surgery, if the someone gets injured in the case of pain and it has been also given in the case severe headache. The menstrual pain can also be relifed by taking analgesia.
Therefore, The statement explains the most common relationship between sleep deficiency and substance abuse is that it can lead one to use stimulants. Thus, option C is correct.
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What is not an impact to ecosystems during a drought
Answer:
Drought affect people's health and safety,examples of drought impacts on society include anxiety or depression about economic losses, conflicts when there is not enough water, reduced incomes, fewer recreational activities, higher incidents of heat stroke, and even loss of human life.
Explanation:
Drought also affects the environment in many different ways. Plants and animals depend on water, just like people. When a drought occurs, their food supply can shrink and their habitat can be damaged. ... Increase in disease in wild animals, because of reduced food and water supplies.
Which of the following is not a current theory regarding global climate change?
Answer:
Explanation:
“Higher levels of carbon dioxide in the atmosphere will have no effect” is not a current theory regarding global climate change.
Global warming refers to the recent and ongoing rise in global average temperature near Earth's surface. It is caused mostly by increasing concentrations of greenhouse gases in the atmosphere. Global warming is causing climate patterns to change
The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
Answer:
C.) Higher levels of carbon dioxide in the atmosphere will have no effect.
Explanation:
Edge
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After letting his soil sample sit in water for an hour, Mark concludes that just one type of material made up the soil. Jack concludes that the soil had several different materials, each with a different weight. Based on the results of your experiment, whose conclusion do you support and why?
Soil is typically comprised of a mixture of materials including inorganic mineral matter, organic matter, and water/air. Therefore, Jack's conclusion that the soil was made up of several different materials, each with a different weight, is likely more accurate than Mark's conclusion that the soil was made up of one type of material.
Explanation:Based on the information you've provided, it is likely that Jack's conclusion is more accurate. Soil is comprised of a variety of different types of materials. These materials usually include inorganic mineral matter, organic matter, and water and air. Additionally, different types of soil particles such as sand, silt, and clay, contribute to the overall composition of the soil. Given these facts, soils are rarely composed of just one type of material. Therefore, Jack's observation that the soil sample contained a variety of materials, each with a different weight, is likely more accurate.
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In polar areas, water on the ocean's surface can freeze. As the water turns into ice, salts are squeezed out of the ice and enter the liquid water below the ice layer. What is the result of this?
Answer:
The ice becomes freshwater.
Explanation:
As many would know, most of freshwater on earth (about 68.7%) is kept in glaciers and icecaps. This tells us that the ice frozen in icecaps are freshwater.
Final answer:
The exclusion of salts from forming sea ice increases the density of the water, causing the cold, salty water to sink to the ocean bottom, contributing to downwelling.
Explanation:
When water in the polar areas begins to freeze, the salts in the water are squeezed out and increase the salinity of the liquid water beneath the ice layer. This process increases the density of the water, causing it to sink. Such an increase in salinity and decrease in temperature makes this water denser than the surrounding water. As a result, the cold, salty water sinks to the bottom of the ocean in a process known as downwelling. This is crucial in ocean circulation because it helps to distribute nutrients and energy around the globe.
Which elements are part of an area's topography? Check all that apply.
weather
climate
elevation
landforms
relief
Answer: elevation, landforms , relief
Explanation:
Area's topography can be defined as the physical features with which the area of the land is associated with. These features are mountains, lakes, valleys and rivers.
The following are the elements of the parts of the area's topography:
Elevation: The elevation describes the height above the given level. This can be used to measure the height of the mountain.
Landforms: Landforms are the features of the Earth's surface that includes the parts like hills, plains and mountains.
Relief: A relief gives an idea of elevation from the concerned point in a landform.
Answer:
elevation, land forms , relief
Explanation:
hope it helps you out
A lizard is sitting on a rock on a cool, cloudy morning. As the day progresses, the sun comes out, and the temperatures of the rock and the lizard increase. What changes are expected in the lizard's metabolic rate and activity level
Answer:
The lizard will have a higher metablolic rate and it will have a higher activity level
Explanation:
Fishermen use minnows as bate, the minnows are stored in cold water for slower metabolic rate and a lower acivity level so that the minnows can last longer. It is the opposite of the lizard question
What is the correct meaning of the word liable?
The contract stated that the homeowner is liable for any damages caused from weather.
responsible
responsible
punished
protected
guilty
Answer:
responsible by law is liable
A state decides to invest in solar energy panels. How could their investment
slow down resource depletion?
A. It will increase the consumption of electricity from coal.
O
B. It will reduce the cost of electricity from alternative sources.
O
C. It will increase the supply of electricity from alternative sources.
O
D. It will reduce the demand for electricity overall.
It will increase the supply of electricity from alternative sources. (Option C).
How could their investment slow down resource depletion?Investing in solar energy panels increases the supply of electricity from alternative and renewable sources. Solar energy is a clean and sustainable energy source that does not deplete finite resources like fossil fuels (coal, oil, natural gas).
By increasing the supply of electricity from alternative sources like solar power, a state can reduce its reliance on fossil fuels and slow down resource depletion. This reduces the environmental impact and dependence on non-renewable resources, contributing to a more sustainable energy future.
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2. Circle two examples of how organisms interact in this scene. Describe each one.
Bed talled
3. How are a snake's sharp fangs an adaptation
that help it survive in the saguaro community?
Answer:
2.??
3. They are helpful in his environment because he is able to hunt for prey and also protect itself from other predators.Three major interactions are competition, predation, and symbiosis.
Explanation:
Sedimentary rock layers that were deposited between 488 million and 444 million years ago are found on
the surface at which two New York State locations?
Final answer:
The detailed references provided do not specify exact New York State locations for sedimentary rocks aged between 488 million and 444 million years old. Further research with geological resources would be required to pinpoint these locations.
Explanation:
Sedimentary rock layers that were deposited between 488 million and 444 million years ago are not discussed in detail within the provided references. However, by referring to the geologic history of New York State, one could speculate that rocks from this era might appear in areas where ancient sedimentary layers are exposed due to erosion or other geological processes. To determine the specific locations in New York State where such rocks can be found requires additional reference to geological maps or academic resources that detail the stratigraphy of the region.
Which phrase best describes the path of a light wave?
A. Spiraling around the source.
B. Straight away from the source.
C. Perpendicular to the source.
D. Parallel to the source.
Answer:
B. Straight away from the source
Explanation:
In an isotropic medium, light always travels in a straight line away from the source.
Answer:
B. Straight away from the source.
Explanation:
Quiz verified
How is solar eclipse positioned
Answer:
A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth. A solar eclipse can only take place at the phase of new moon, when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface
Explanation:
A solar eclipse occurs when the moon passes in front of the sun, blocking it out partially or completely. The eclipse results in parts of the earth being covered in the shadow of the moon.
Why is the Ocean so important to Humans?
Answer:
Oceans generate half the air we breathe and contain 97 percent of the water on earth. Oceans are home to many types of animals that we eat. ¨¨Living oceans absorb carbon dioxide from the atmosphere and reduce climate change impacts. ¨¨ Oceans absorb 50 times more carbon dioxide than our atmosphere. That is incredible. Oceans are filled with life and we need to protect them. Our food chain is also connected to the ocean.
Brainliest please!The oceans play a critical role in supporting human life by providing oxygen, regulating climate, and offering food and other resources. Phytoplankton in the ocean contribute to over 50% of the Earth's oxygen supply. Sustainable management of marine ecosystems is essential as the oceans face challenges such as overfishing, pollution, and habitat destruction.
Explanation:Importance of Oceans to Human Life
The oceans are fundamental to human existence, significantly affecting food security, climate regulation, and oxygen production. Covering 71% of the Earth's surface, oceans are home to diverse marine ecosystems. These ecosystems are crucial because they provide resources that are not infinite. Overfishing has led to the decline of fish, mammal, and sea turtle populations, while destructive fishing practices have damaged essential habitats. Furthermore, pollution, coastal development, and various human activities have caused degradation of marine environments, such as mangroves and sea grass beds, which serve as critical buffers for coastal areas.
Phytoplankton, one of the smallest oceanic organisms, are immensely important as they release over 50% of the Earth's oxygen through the process of photosynthesis, making them vital for human breathing and survival. Water, another precious resource provided by the oceans, is vital for all life, with the human body being made up of approximately 60-70% water. A critical concern is that only a small fraction of the Earth's water is fresh and accessible for human use. The ongoing exploitation and degradation of the oceans suggest the need for sustainable management of these vital resources to ensure they continue to support human welfare.
What do sea turtle hatchlings rely on to make it safely to the sea after they hatch?
A. subtle, nighttime lighting cues
B. the loud roar of ocean waves
C. the scent of seaside air
D. the direction of the sun
Answer:
D
Explanation:
Just did on a quiz and got it right
What are laboratory apparatus .
Answer:
Laboratory apparatus are the tools required to complete lab work, including test tubes, pipettes, beakers, and graduated cylinders.
Explanation:
The laboratory apparatus depends upon the type of laboratory you are in and the experiment you are going to perform.
For example, if you are in a chemistry laboratory, the common apparatus you need to use are:
Test tube holders, tongs - for holding test tubes and beakers that should not or cannot be touched.
Test tubes - for holding small samples or for containing small-scale reactions.
Test tube stands - for keeping a few test tubes upright
Droppers - for adding a very small amount of liquid, drop by drop
Burettes - for adding a precise volume of a liquid
Pipettes - to dispense small and precise amount of liquid samples
Bunsen burners, hot plates, hot water baths - heat sources
Beakers, Erlenmeyer flasks - to contain reactions or to hold liquid samples
Watch glasses - a cover for beakers; sometimes used as an evaporating dish
Funnels - for funneling or for filtering
Graduated cylinders - to measure an amount of liquid
Volumetric flasks - to make precise dilutions
Wash bottles - for dispensing small quantities of distilled water
Wire gauges, clay triangles - to support a container while it is heating
Clamp stands - to support a piece of equipment or a part of it that is otherwise unstable
Balances - to measure the mass of a reagent or product
Kipp's apparatus - to produce a reagent gas (e.g. H2S) in a controlled manner
Spectrophotometers - to measure the absorbance and transmittance of a liquid sample
Fume hoods - to ventilate harmful gases
Desiccators - to preserve a substance in a moisture-free environment
a paleontologists finds a plant fossil that shows evidence of a vascular structure. what can the paleontologists conclude.
A. It was a land plant B. It was a sporophyte C. It was an ocean plant D. It was a gametophyte
Answer:
it was a land plant!!
Explanation:
The paleontologist can conclude that the plant fossil was a land plant (option A), as the presence of vascular structures is a defining characteristic of land plants.
What are plants' vascular tissues?Vascular tissues are specialized tissues found in the vast majority of land plants that transport water and nutrients throughout the plant body. They consist of two types of tissues: xylem and phloem. Xylem transports water and dissolved minerals from the roots to the leaves and other parts of the plant, while phloem transports sugars and other nutrients produced in the leaves during photosynthesis to other parts of the plant.
Hence, the paleontologist can conclude that the plant fossil was a land plant (option A), as the presence of vascular structures is a defining characteristic of land plants.
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Which electronegative element/compound do chemosynthetic bacteria use drive the electron transport chain
Answer:
Hydrogen sulfide or methane
They use methane as an energy source
Final answer:
Chemosynthetic bacteria use a variety of electronegative elements or compounds, like oxygen, carbon dioxide, and iron, as electron acceptors in their electron transport chains to produce energy.
Explanation:
Chemosynthetic bacteria utilize various electronegative elements or compounds to drive the electron transport chain (ETC) as part of their unique metabolic processes. These organisms can be found in different habitats, including deep-sea vents and soil. One primary example is the group of nitrifying bacteria, which oxidize ammonia (NH₃) to nitrite (NO₂), and further to nitrate (NO₃). These reactions are part of the nitrogen cycle, which is crucial for plant growth. The electrons removed from the nitrogen compounds are used to reduce NADP+ to NADPH, facilitating the flow of electrons through their membrane system. Another example includes bacteria that utilize hydrogen sulfide (H₂S) at deep-sea vents for chemosynthesis. Different chemosynthetic bacteria use a variety of oxidizing agents, such as O₂, CO₂, and Fe³⁺, leading to the formation of H₂O, CH₄, and Fe²⁺, respectively. Proton motive force and ATP production are also critical aspects of their energy metabolism.
What is heritable variation?
Answer:
Heritable variation refers to the genetic differences between organisms that allow you and I to have different hair colour, height
Explanation:
These variations can be a result of genetic mutation, where factors such as sunlight alter certain genes. This is why people in Africa, for instance, have dark skin.
How does natural selection lead to evolution
Answer:
Natural selection is a theory conceived by Charles Darwin that states that in a population, organisms with a genetic trait that increases the chance of having offspring will pass on their genes to the next generation more than those without it. Natural selection ultimately leads to evolution after many successive generations.
Answer:Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce. The ones with the favorable circumstances and has one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome and passes the genes on to the off spring. Over many generations, the process of natural selection leads to evolution occurring.
Explanation:
Use a calculator to compute
the average heights of the
plants in each group to the
nearest centimeter.
Week 5 Average Heights
Control Group:
cm
Exper. Group:
Answer:
Control-49
Experimental-55
Difference-6
Explanation:
The average height of the plant is the value which represents the central value of the heights of all the plants.
What is an average?An average is a value which represents the nearest possible central value of a given set of data.
The formula for calculating average is given as:
Average = sum of total/number of total
The average height of the plants can be determined by totalling the heights of all the plants and dividing by the number of plants.
Therefore, the average height of the plant is the value which represents the central value of the heights of all the plants.
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In clackamas, oregon, a stand of hybrid poplar trees was planted on an area of land that is contaminated with volatile organic compounds (vocs). why would someone purposely plant trees in an area with contaminated soil?
Answer:
Hybrid poplar trees can absorb volatile organic compounds through their stomata, thereby filtering them
Explanation:
It is well known that trees play a key role by purifying the air of CO2 and releasing oxygen. Moreover, trees are also capable of absorbing and filtering different types of harmful gases such as ammonia and sulfur dioxide, thereby forestation of larger areas may result an interesting strategy to clean the air from toxic pollutants
What effects do deforestation have on the animals?
Answer:
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Explanation:
The ecosystem with the greatest biodiversity is the one that has the greatest:
A : variety of living things
B :average annual rainfall
C :cover of land area
D :elevation above sea level
The greatest biodiversity is found in ecosystems with a wide variety of living things. This means having a diverse range of species and genetic differences among them.
Explanation:The ecosystem with the greatest biodiversity is the one that has the greatest variety of living things (Option A). Biodiversity refers to the variety of life found in a particular ecosystem or across the entire planet. It includes the number of different species, the genetic diversity within and between these species, and the range of habitats and ecosystems. The more variety of different species and genetic differences, the higher the biodiversity. This is crucial for the health of the ecosystem, as each species fills a different ecological niche and contributes to the system's overall resilience.
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How did the last ice age affect North America?
Check all that apply
O
A. The southwest was covered with sand dunes.
B. Canada was covered with ice thousands of feet thick
C. Florida received heavy rains.
O D. Much of the northern United States was ice covered.
SUBMIT
Answer: The correct answers are for me was:
A. Much of the northern United States was ice cover
C. Canada was covered with ice thousands of feet thick
Explanation:
The last ice age saw Canada and much of the northern United States covered in thick ice sheets. The glaciers shaped the land by removing soil and creating new topographical features like Cape Cod. Options A and C are not explicitly supported by the information provided.
Explanation:The last ice age had a vast impact on North America, leading to several significant geographical and climate changes across the continent. Here's a look at those provided options, with explanations based on our understanding:
B. Canada was covered with ice thousands of feet thick: This is accurate. During the last glaciation, ice sheets, sometimes two miles thick, extended over much of present-day Canada and the northern United States.D. Much of the northern United States was ice covered: This is also true. The glaciers reached into the northern United States and shaped the land by removing soil and depositing a variety of geological materials upon which new soil could develop. Landforms like Cape Cod are remnants of this glacial activity.The other two options are not explicitly supported by the data provided:
A. The southwest was covered with sand dunes - This option is not confirmed by the data provided.C. Florida received heavy rains - While climate patterns were different during the ice age, specific details about rains in Florida are not given in our sources.a person has a condition that makes her bone weak and easily broken. what part of the bone is most likely the cause of this condition?
a/ compact tissue
b/foramina tissue
c/spongy tissue
d/bone marrow
Answer:
Compact tissue I think
Explanation:
Final answer:
The spongy tissue of the bones is the most likely cause of a condition that results in weak and easily broken bones, such as osteoporosis, which makes the bone tissue brittle, thin, and prone to breakage.
Explanation:
A person with a condition that makes their bones weak and easily broken likely has an issue with the spongy tissue of their bones. Compact bone tissue forms the hard external layer of all bones and consists of osteons, which makes it strong and durable. Spongy bone tissue, on the other hand, forms the inner layer of all bones and consists of trabeculae. It is found in areas of bones that are not heavily stressed or at which stresses arrive from many directions. Spongy bone is less dense and more porous than compact bone, making it susceptible to conditions like osteoporosis, where the bone tissue becomes brittle, thin, and spongy. These fragile bones can break easily, and they start to crumble and collapse, making spongy bone the most likely part to cause conditions associated with weak and easily broken bones.
Question 6: Why might islands be good ecosystems to study the outcomes of the founder effect?
Answer: This can be useful site to study the diversity of organisms.
Explanation:
The founder effect is the known phenomena proposed by Ernst Meyer. It occurs when a small number of organisms leave the larger population. The genetic variation will be lost when a new population is established by the small population. Due to lack of genetic variation the new population becomes phenotypically and genotypically different from the parent population. This process lead to speciation.
The islands are the regions where few organisms can be found, those have migrated from the native land. Thus the study of diversity of these organisms will become simple.
During Anaerobic respiration:
A. glucose is not used as the energy source, since there is no oxygen.
B. glucose is converted into ATP.
C. ATP is converted into Lactic Acid.
D. glucose is converted into Lactic Acid.
During anaerobic respiration, glucose is converted into ATP. The correct option is B.
What is anaerobic respiration?
Anaerobic respiration happens in those organisms that do not require oxygen or don't get oxygen. Anaerobic respiration also occurs when there is a scarcity of oxygen.
Anaerobic respiration also broke down food and produces energy, but the energy produced by respiration is way less than aerobic respiration, it is just 2 ATP.
Thus, the correct option is B. glucose to be converted into ATP.
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