I don't have enough information but it could be natural selection or mutations.
Good evening Aixa,
An experiment is designed so that you can observe the differences between the experimental group and the control group.
The experimental group is the group of specimens you're exposing to the experiment and the control group is a separate group of specimens that is not being exposed to the experiment, but are also being observed.
-Hope this helps!
Answer:
Not that often
Explanation:
Exponential growth can only occur if there are unlimited resources, no competition or no predators.
Answer:
desert plants that need to conserve water like a cactus.
Explanation: