Answer:
I believe the answer is D or B.
Explanation:
Answer:
Internal environmental factors are events that occur within an organization. External environmental factors are events that take place outside of the organization and are harder to predict and control.
There aren't enough oxygen molecules in the air are higher altitudes
Each time one organism eats another organism, a transfer of energy occurs.in the form of sugars which an organism breaks down for energy.
Capillaries are one cell thick and so this makes them very thin. capillaries are also arranged in networks known as capillary beds, and thus multiple capillaries are spread over a large area.