Answer:
The answer is D. The autonomic nervous system.
Answer: They can be either of the same species (intraspecific interactions), or of different species (interspecific interactions). These effects may be short-term, like pollination and predation, or long-term; both often strongly influence the evolution of the species involved. A long-term interaction is called a symbiosis.
Explanation:
Answer:
They pick up oxygen from the lungs and drop off oxygen to the cells through the capillaries
The photosystem
This unit absorbs light energy for photosynthesis.
Answer:
C
Explanation:
all of them have negative effects on the enviroment as a whole but C gives no reason why it would be a consequence
