Answer:
C. Vitamins
Explanation:
The factor Vitamin is being tested in this experiment. For an experiment to occur, it is necessary that we plan an experimental group as well as a placebo group (control group). In this experiment, all other factors have the same experimental group as well as the same placebo group except for the factor vitamin. The factor 'vitamin' has a experimental group in which the particular vitamin is given to the object of test and a placebo group in which the vitamin is not given to the object of test. Hence, vitamin is the variable that is being tested in this experiment.
It may cause mutations; Artificial selection is the process of unintentional modification of a species through human actions which encourage the breeding of certain traits over others. Some disadvantages of artificial selection is that it is inhumane, can cause mutations or produce new problems. Hope it helps :D
Answer:
the sun or grass
Explanation:
first the sun because the sun helps produce photosynthesis which grows the grass so that other animals can eat from the grass
They split up atoms to make power
