Plants can make their own food by photosynthesising however, animals need to consume plants for energy/as food if their were no plants animals would starve. plants also provideanimals with oxygen as a waste product of photosynthesis which animals need to survive
I believe b. Let me know if it's wrong
Answer:
C
Explanation:
The definition of microtuble is: "a microscopic tubular structure present in numbers in the cytoplasm of cells, sometimes aggregating to form more complex structures." (google) Therefor, it would not be a part of mitosis prophase II.
The answer is <span>Time is the independent variable, and the number of birds is the dependent variable. </span>
<span>An independent variable is variable that is not affected in the experiment. It is what experimenter controls. On the other side, a dependent variable is called dependent because it depends on the independent variables. It is what is affected during the experiment.
In Sam investigation, he controls time - he counts birds at 6 a.m. and 6 p.m. So, time is the independent variable. The number of birds is affected during the experiment, so it must be the dependent variable.
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