ANSWER: C, the continents were at one time joined together.
REASONING: Alfred Wegener was the first person to propose the scientific theory of Continental Drift. Continental Drift is a theory that supposes all the continents were at one time joined together as one large land mass. The mechanisms of continental drift can be explained by Plate Tectonics.
Sexual reproduction increases genetic variation while asexual reproduction has less genetic variation
The three parts of an amono acid are the carboxyl group(-COOH) an amino group(-NH2) and a radical that differs from amino acid to amino acid(-R)
Answer: Energy
Nutrition and energy is what is required in the growth cycle.
Energy is used everyday in our daily lives. Some examples are when we are running, walking, talking,etc.
