The new species come from old ancestors of the animals that were there, over time they slowly evolved, and they adapted to that new environment.
Is the answer three
Because they help the body absorb vitamins a, d, e, and k.
In the experiment, the independent variable is the drug amount. Experiment group is given certain amount of drug, control group is not given the drug. The dependent variable is the body fat. I think you means the control is the living environment including food and water.
The best answer should be
D) Food component that can be stored in the body for future energy needs
Answer: base substitutions, deletions and insertions
