Answer:
permissive
Explanation:
Here is the complete question:.
Current research into neurotransmitter systems has produced the "________ " hypothesis, which states that when serotonin levels are low, other neurotransmitter systems become dysregulated and contribute to mood irregularities.
a. incompatibility
b. lock-and-key
c. permissive
d. pathoneurosis
Answer:
Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge. In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.
Explanation:
The answer is A because it is the most explainable answer.
Is this supposed to be a multiple choice question???if so carrots, and beets are examples of a root crop.