Answer:
In animal field studies, why do scientists usually try to work without making the animals aware that the humans are present? It is necessary to observe the animals without disturbing them. When a controlled experiment is not possible, why do scientists try to identify as many relevant variables as possible?
C human selection is the answer hope this helps
Answer:
5.) What is the process by which the egg is released called?
A.) Ovulation
6.) When does ovulation occur?
A.) Ovulation typically occurs about 14 days before the start of the next menstrual period.
<u>-TheUnknownScientist</u>