Answer:
DGB Either Kill or Eat other organisms.
Explanation:
DGB Cause Im not sure
approximately 115 days
Human red blood cells (RBC), after differentiating from erythroblasts in the bone marrow, are released into the blood and survive in the circulation for approximately 115 days.
B. producer because most autotrophs are green plants use light for energy.
If this is for the scientific process unit, the answer is passing laws to prevent certain types of scientific research. I know because I had this question in biology.
The answer to this one is D