The answer for this will be C an integration of organ systems this is because the endocrine system also works with the nervous system and immune system etc
1 hormones
2 external stimuli
Answer:
Theory is not definite, while Law is.
Explanation:
A Theory is an idea or set of ideas that has proven itself many times, but has certain loopholes that prevent absolute certainty. Meanwhile, a Law is a Theory without loopholes.