The steps of scientific method to be used are as follows:
Observes that there are acidic foods.
Asks a question about food's acidity.
Creates a hypothesis about the acidity.
Records the acidity of the food.
Observes that there are acidic foods.
Presents the results to the class.
Explanation:
The scientific method or problem solving approach or experiment to be conducted involves five necessary steps these are:
1. Make an observation: that there are acidic foods.
2. Ask a question to yourself: a question about food's acidity.
3. A hypothesis to be made or proposed: A hypothesis or an explanation for the acidity of food is made.
4. Predictions are made: acidity in the food source is recorded.
5. Testing of prediction or hypothesis is done: food samples tested and found that acid is present in them.
6. Iterate: If the result does not support the hypothesis made, new hypothesis is to be designed and if the result came as expected the hypothesis gets excepted and experiment is performed.
Which scientist most inspired Darwin to pursue his studies of evolution?
Answer:B. Is the answer
Explanation:
Sodium is an element found in table salt. It contains 11 protons and
12 neutrons. How many electrons are found in a neutral atom of
sodium?
A. 11
C. 23
B. 12
D. 1
Answer:
11 electrons are found in a neutral atom of sodium.
Explanation:
atoms are made up electrons and protons. Electrons are negatively charged particles and protons are positively charged particles. The number of electrons and protons are constant or fixed in an element. However, the number of electrons and protons may not be always equal. the number of protons in the atom is equal to the atomic number of the element. sodium's atomic number is 11 and thus the number of protons is also equal to 11. since sodium atom is neutral, the number of protons = the number of electrons. thus the number of electrons in a neutral sodium atom is 11
If a neutral atom contains 9 protons, how many electrons does it have?
a. 9
b. 36
c.
18
Answer: 9 electrons
Explanation: In a neutral atom, it's important to understand that the atomic number or the number of protons that are stored in the core of that element will be the same as the number of electrons in the energy levels orbiting the nucleus.
So if an atom has 9 protons and it's neutral, the atom will have 9 electrons as well since the atomic number is your number of protons and electrons when the atom is neutral meaning it's not an ion.
How does a hydroelectric power plant convert energy?
A.- As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.
B.- As water flows through the channels toward the generator, it has potential energy. This is changed to electric energy as the generator rotates. Some of the electric energy is used to change water's energy into kinetic energy.
C.- As water flows through the channels toward the transformer, it has potential energy.
This is converted to electrical energy by the transformer, and then the energy is
magnified by the generator.
D.- As water flows through the channels toward the turbine, it has kinetic energy. This is changed to potential energy within the turbine. This potential energy is converted to electrical energy by the transformer.
If the answer is right I will mark brainliest!! Just please help!
Answer: A.- As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.
Explanation:
Answer:A
Explanation:
i just took the test
Coronary heart disease is caused by:
reduced blood flow to the heart
reduced nutrient flow to the heart
reduced oxygen flow to the heart
reduced electrical flow to the heart
Answer:
The correct answer is reduced oxygen flow to the heart.
Explanation:
Coronary heart disease brings various complications such as acute myocardial infarction, arrhythmias, angina pectoris. The cause of this disease is atherosclerosis caused by the formation of atheroma plaque (formed by cholesterol, fatty acids, calcium, fibrin) in the arteries that supply the heart. The accumulation of this hard plate in these blood vessels, decreases the blood flow leading to the least amount of oxygen that reaches the heart, and can generate a heart attack.
Which statement correctly compares a hypothesis and a theory?
A theory is a prediction for a specific situation, while a hypothesis is used to make predictions for many similar situations.
A hypothesis is a prediction for a specific situation, while a theory is used to make predictions for many similar situations.
A theory provides an explanation, but a hypothesis does not.
A hypothesis provides an explanation, but a theory does not.
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Answer:
A hypothesis is a prediction for a specific situation,while a theory is used to make predictions for many similar situation
Explanation:
An hypothesis is a thought or prediction that a scientist might think would happen while a theory is a experiment to determine if the hypothesis is correct.
A hypothesis is a specific prediction about a new phenomenon based on a theory, while a theory is a broad explanation that explains larger bodies of data.
Explanation:A hypothesis is a specific prediction about a new phenomenon that should be observed if a particular theory is accurate. It is an explanation that relies on just a few key concepts. Hypotheses are often specific predictions about what will happen in a particular study. They are developed by considering existing evidence and using reasoning to infer what will happen in the specific context of interest.
Hypotheses are often but not always derived from theories. So a hypothesis is often a prediction based on a theory but some hypotheses are atheoretical and only after a set of observations has been made is a theory developed. This is because theories are broad in nature and explain larger bodies of data. So if our research question is really original then we may need to collect some data and make some observations before we can develop a broader theory.
Are alligators Kings of the Everglades?
Answer:
Somewhat Yes
Explanation:
With the population of over 200,000 in the area and the lack of natural predators it would seem so.
2. Which describes a substance with a high index of refraction?
It causes light to speed up significantly.
It causes light to slow down significantly.
90
It bends light less than air.
The statement that it causes light to slow down significantly best describes the high index of refraction.
Explanation:
Index of refraction is the amount a medium will be refracting the incident light. As it is a measure of amount of light getting refracted, the medium decides the index of refraction of that type.
If the index of refraction of any medium is high, then it will refract most of the incident light and so the light' speed travelling through the medium will get slower.
So increase in refractive index decrease the light' speed. Thus, if the light' speed decreases or slows down significantly then the substance has high index of refraction.
In which phase does crossing over occur (where the homologous pairs exchange genetic information)?
A. Prophase I
B. Prophase II
C. Prophase III
Answer:
A
Explanation:
Crossing over occurs between prophase I and metaphase I and is the process where two homologous chromosome non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.
Possible ways the universe might end.
Answer:
Universal heat death, a major freeze, or big rip. Who knows??
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Using the diagram, which of the structures is the youngest?
B
C
D
M
The youngest structure in the diagram is M (Option D), as it cuts through all other layers.
According to the principles of cross-cutting relationships in geology, the youngest feature is the one that cuts through others. Therefore, M represents the most recent geological event in this diagram.
The principle of cross-cutting relationships in geology states that any geological feature (such as an intrusion or fault) that cuts across other layers or structures must be younger than the layers it cuts through. In other words, if a feature disrupts existing rock layers, it formed after those layers were already in place.
Structure M is an igneous intrusion that cuts through all existing layers and structures, including L (another igneous intrusion). Since M intersects L, it must be younger than L. Additionally, M also cuts through layers K to B, indicating that it formed after the deposition of these layers.
Based on the principles of cross-cutting relationships, we can conclude that M is the youngest structure in the diagram. Geologists use these principles to unravel the Earth's history and understand the sequence of events that shaped the landscape.
The question is:
Using the diagram, which of the structures is the youngest?
A. B
B. C
C. D
D. M
In a DNA molecule, which of the following forms a base pair with adenine?
O A. Cytosine
O B. Guanine
O C. Thymine
O D. Adenine
Answer:
C.
Explanation:
Thymine and Adenine forms a base pair together, while Guanine and Cytosine form a base pair with each other. (AT & GC)
In a DNA molecule, Thymine forms a base pair with adenine. Thus, the correct option is C.
What is Base pairing?Base pairing may be defined as the process through which different nucleotides are bound to each other in a complementary form in sequences of nucleic acids. This process of base pairing significantly constructs a long strand of DNA or RNA.
According to the process of base pairing, Adenine always forms a base pair with thymine and vice versa, while guanine always forms a base pair with cytosine and vice versa.
According to Chargaff's rule, the amount of adenine is always equal to the amount of thymine, while the amount of guanine is always equal to the amount of cytosine. It is the salient feature of nucleic acids.
Therefore, in a DNA molecule, Thymine forms a base pair with adenine. Thus, the correct option is C.
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2. (2) List 2 important objectives for the cow/calf producer.
Answer:
Important objectives for the cow/calf producer is given below.
1) First objective of cow/calf producer is to provide healthy food material to the cow and calf in order to gain more benefit from it.
2) Second objective of cow/calf producer is to increase milk and meat production from animals in the farm to earn more money from it.
Sometimes a few of the planets are visible from Earth without a telescope. Why do the planets look so small from Earth?
A. because they are extremely far away
B. because they are each about the size of a grain of sand
C. because they are always moving away from Earth
OD. because the Earth's atmosphere distorts what we see
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10 of 22 Answered
Answer:
A
Explanation:
Pretty sure its A
letter a
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Mr. Kim's eighth grade science class was trying to maintain a classroom garden. Unfortunately, the weeds were taking over. Mr. Kim saw a weed killer advertised on TV which said that one application would kill the three most common garden weeds and would be effective for at least one month. Mr. Kim bought some and applied it to the classroom garden. His students kept track of the weeds growing in their garden.
Mr. Kim's classroom garden scenario involves herbicides, which are chemicals used to control weeds, making this a Biology-related question. Three types of control methods in managing weeds are chemical, biological, and cultural control. Herbicides can vary in selectivity and persisted effects, and it's essential to handle them correctly to avoid potential health risks.
Explanation:The story of Mr. Kim's classroom garden involves the use of a weed killer or a herbicide, thus it falls under the field of biology. Herbicides are chemicals that can control or kill unwanted plants such as weeds. They can be non-selective (kill all types of plants) or selective (kill specific types of plants while sparing others). For example, 2,4 D is a selective herbicide that kills most broadleaf plants but spares grasses.
Mr. Kim's approach to weed control in their classroom garden is a type of chemical control, one of the three methods to manage weed populations. The other two are biological control (using living organisms to reduce weed populations) and cultural control (modifying the environment to deter weed growth).
It's important to understand that while the usage of herbicides can be effective, they can also present health risks if humans or other non-target organisms are exposed. Therefore, proper application and management are crucial.
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How does angiogenesis effects the body
Answer:
The angiogenesis affects the body
The presence of blood vessels where they shouldn't be found may affect the tissues and leading to an increasement in failure.
The absence of food vessels in a repairing metabolically active tissue may inhibit the repair
It also promotes neoplastic diseases
Explanation:
what is the name for a complex, organized group of organisms
Answer: Community
Explanation:
A community refers to a group of organisms including plants, animals and microorganisms, living and breeding together in a given area.
It is organized because some organisms called producers (plants) produce the food which is eaten by consumers (animals), and after the consumers die, Decomposers (microorganisms) feed on them.
Thus, community is the answer
Which of the following cause particles to move back and forth in
the direction the waves are moving?
a. P waves
b. L waves
c. S waves
d. tsunamis
Answer:
tsunamis
Explanation:
is the movement back and forth in the direction of the waves that are moving
Does every organisms on earth carry out Mitosis?
Answer:
No because prokaryotic does not cells such as bactiers
Explanation:
because of that not all cells have mitosis
1. All electromagnetic energy is visible.
2. Electromagnetic energy is the same thing as heat.
3. Ultraviolet has a frequency higher than visible light.
4. The electromagnetic spectrum includes only visible light and infrared.
5. Radio waves are not really electromagnetic.
6. Only visible light can transmit through a vacuum.
7. All electromagnetic waves are transmitted, reflected, and absorbed depending on the material they hit.
8. All electromagnetic waves have the same frequency.
Which of the following statements is true of all organisms in every environment?
O A.
They must compete for essential resources.
B.
They avoid interaction as much as possible.
C.
They are able to produce their own food.
D.
They must consume other organisms for energy
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Answer:
A. They must compete for essential resources.
Explanation:
The true statement about all organisms in every environment is that they must compete for essential resources. This competition for resources like food, water, or space is an integral part of natural selection and affects all organisms' ability to survive and reproduce.
The correct answer to the question, which asks about the universal trait of all organisms in every environment, is A. They must compete for essential resources. This is a foundational concept in ecology, reflecting the competition that occurs when multiple organisms vie for the same resources such as food, water, or space. This dynamic is a driving force behind the process of natural selection, as it influences which organisms thrive and which do not.
All organisms engage in the process of gathering energy from their surroundings to fuel their cellular functions, such as converting substances to ATP (adenosine triphosphate). However, not all organisms can produce their own food; this ability is limited to autotrophs like plants. Heterotrophs, on the other hand, must consume other organisms to obtain the energy they need to survive. This necessitates that they engage in competition for food resources with other organisms.
Owing to the limited availability of resources, organisms engage in both intraspecific (within the same species) and interspecific (between different species) competition. This is crucial for their growth, reproducing, and maintaining organization, all of which are part of exchanging matter with the environment.
How would you describe the relationship between the two variables?
What happens as the light intensity increases?
Answer:
As light increases photosynthesis increases in rate as the plant would have more supply of an reaction due to the sun uv
1 point
Medicare is a national health insurance program that provides health
insurance for Americans
O
(all listed)
O
in terminal stage of certain diseases
O
aged 65 and older
with disability status
Medicare is a national health insurance program that provides health
insurance for Americans aged 65 and older with disability status
Explanation:
Medicare is the United States Federal Government’s health insurance coverage program especially for the senior people aged 65 and above and also for those with disability status.
Medicare is divided into various parts like A, B, C, D according to the facilities covered and services provided. Part A provides free hospitalization to people who are 65 and above irrespective of their income level. Part B looks into essential medical services like physician office visits, diagnostic studies, equipments like wheel chair etc.
Medicaid is the coverage that provides health insurance for people in the limited income group.
What does the person shown MOST LIKELY do?
A
pass laws
make laws
review laws
carry outlaws
Submit
Answer:
Review law
Explanation:
Answer:
Correct is review law
Explanation:
I got it right on USA test prep
When is the best age/time to start working towards a healthy cardiovascular system?
Answer:
Scientific researches have shown that starting a healthy cardiovascular system can benefit the heart at any age, even if you are in the 30's, 40's or 50's.
So, it is never too late for starting to care for your heart and indulging in cardiovascular activities to keep your heart strong.
Although the functioning of the heart starts to be affected after a person reaches the age of 50's, yet exercise can help him improve the heart health even in such old ages.
What is the value in meters per second squared, of the acceleration of
gravity?
The rate of acceleration of gravity is 9.8 m/s^2
Which statement describes what will most
introduction of the predator?
owal will most likely occur in the rabbit population due to the
A
The rabbits will mutate their genes and e
ace their genes and express genes that increase their speed.
B
Slower rabbits will develop stron
we dobits will develop stronger legs and pass this trait to their ortspning.
Rabbits will mate and produce offspring with a different species
ontspring with a different species that has faster runners.
Faster rabbits will survive and reproduce increasing the a
and reproduce increasing the average speed of the rabbit
population.
Answer:
a, the rabbits will mutate their genes and answer a
Explanation:
Faster rabbits will survive and reproduce increasing the average speed of the rabbit population.
Who is a predator?A predator is an organism that hunts, kills and consumes other living beings for its survival. In the animal kingdom, predators play a crucial role in maintaining the balance of nature. They are typically at the top of the food chain, with prey forming the lower level. The predator-prey relationship is a key aspect of the ecosystem, as it helps regulate the populations of both predators and prey.
The predator species have adaptations, such as sharp teeth and claws, agility, and strength, which help them in capturing and consuming their prey. Some of the common predators include lions, tigers, wolves, and snakes. Their role in the ecosystem is important in maintaining a healthy and stable food chain, which is necessary for the overall health of the environment.
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6. If the bullet in problem #6 is traveling 2 meters of the ground, what would the potential energy
bullet be?: :
Final answer:
To find the potential energy of the bullet 2 meters off the ground, use the formula PE = mgh. With the given mass of 10g, converted to 0.01 kg, and the height of 2 meters, the potential energy is calculated to be 0.196 joules.
Explanation:
The question is about the potential energy of a bullet that is 2 meters off the ground. The potential energy of an object can be calculated using the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s2 on Earth), and h is the height of the object above the reference point. In this case, we assume that the mass of the bullet is 10g (which can be converted to 0.01 kg for consistency of units) and the height h is 2 meters.
Using the formula:
PE = mgh
PE = 0.01 kg * 9.8 m/s2 * 2 m
PE = 0.196 J
Therefore, the potential energy of the bullet when it is 2 meters above the ground would be 0.196 joules.
Sally's teacher asked her to classify a microscopic organism found in pond water. The FIRST characteristic Sally used to figure what kingdom the organism belonged to was
Sally would first determine if the microscopic organism from pond water has a nucleus to classify it into a kingdom, which would likely place it in the Eukarya domain and possibly the Protist Kingdom.
The first characteristic Sally used to classify a microscopic organism found in pond water into a kingdom would likely be whether the organism has a membrane-bound nucleus. If the organism has a nucleus, it falls into the Eukarya domain, which includes the kingdoms of animals, plants, fungi, and protists. This is because the Three Domain Classification system, proposed by Carl Woese, classifies all living organisms into three categories based on their cell structure and ribosomal RNA (rRNA) sequences: Bacteria, Archaea (both lacking a membrane-bound nucleus), and Eukarya (organisms with a nucleus). Protists are generally eukaryotic organisms that cannot be classified as animal, plant, or fungus, and are common in aquatic environments like pond water.
please help me ASAP
Answer:
A population is divided.
Explanation:
https://quizlet.com/188846932/214-quiz-genetic-isolation-flash-cards/