On the average, most mammals are about: A. 90 B. 50 C. 40 D. 70, percent water

Answers

Answer 1

Answer: D.) 70% mammals are 70 percent water

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In an experiment to test the hypothesis that added phosphate will cause marigolds to produce more blooms, the experimenter has two groups of pots planted with marigold seeds. One group gets watered with phosphate added to the water, while the other group gets watered with no phosphate. Both groups get the same amount of water and light.Which is the independent variable in this experiment?
A. amount of light
B. amount of water
C. amount of phosphate
D. amount of blooms on a plant

Answers

Answer:

C. amount of phosphate

Explanation:

First, you need to know what a dependent variable and an independent variable are.

The independent variable is the one that influences the dependent variable to exhibit a response that influences, generating a result that can be observed by the researchers.

The dependent variable, on the other hand, is one that does not influence anything, but is influenced to generate a result, by the independent variable.

In the question above, the researchers want to test the hypothesis that the added phosphate will cause the marigolds to produce more flowers. According to this hypothesis, we can conclude that the researchers want to know the influence of the amounts of phosphate on the flowering of marigolds. In this case, we can say that the amount of phosphate is the independent variable of the experiment.

I think it's B. The amount of water

An interview conducted by a research writer would be a _____ source.secondary
reliable
primary
tertiary

Answers

Answer:

secondary is a correct option.

Explanation:

primary source: source which has the original source of information. It is a source of which has been created when the study is done.

Secondary source: in which analysis is done based on the primary source, In this original information analyzed and arranged after that evaluation is done.
In this case an interview conducted by a research writer would be a secondary source because the analysis is done based on the primary data.

tertiary source: It is a distillation of the information obtained from both primary and secondary sources.

It is a Secondary source because it is conducted by the conductor.

A plant is starting to fall over because the plant can no longer support its own weight. Students want to find out why this is happening. Which of the following is a good hypothesis for their experiment?a. The plant is producing cellulose molecules.
b. The plant is not producing simple sugars to support its structure.
c. The polysaccharides in the plant are breaking down.
d. The glucose molecules in the plant are breaking down.

Answers

The correct answer is c. The polysaccharides in the plants are breaking down.The hypothesis is something that we predict about a certain thing and we want to test and approve it. In this case, we suppose that the polysaccharides, which are structural components in the plants are breaking down and as a consequence of that the plant can no longer support its own weight.

I think the answer is c. The polysaccharides in the plants are breaking down. The cellulose is important in the structure of the plant. It can support the shape of the plant.

Most wind erosion is caused by _____.

Answers

most wind erosion is caused by abrasion. abrasion is the mechanical scraping of a rock surface by friction between rocks and moving particels during their transport by wind, gravity, waves, glacier, ect.

The domestication of plants and animals is a hallmark ofSelect one:
a. the hominids.
b. Homo erectus.
c. the paleolithic era
d. the neolithic era.
e. the first Homo sapiens.

Answers

The domestication of plants and animals is a hallmark of the neolithic era - D. This was the time when humans first started domesticating different animals and more importantly, started growing crops whichenabled them to start living on one location and staying there for longer times.

The domestication of plants and animals is a hallmark of the neolithic era.
The answer is D.

the walls of the alveoli in the lungs are incredibly thin. Explain how this structure is related to function in the body.

Answers

alveoli in the lungs take the oxygen from air breathed in and transfer them into de oxygenated blood making them oxygenated

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