Question

post test: the interdependence of ecosystems
select all the correct answers.
meg drew this model to show the carbon cycle. however, there are errors in her model. which arrows point in the wrong direction?
a
b
c
d
e

Explanation:

1. Arrow A: Organic carbon moves from dead organisms/waste to decaying organisms (decomposers), so this direction is correct.
2. Arrow B: Animals release CO₂ via respiration, so the arrow should point away from the animal to the atmosphere, not toward it. This direction is wrong.
3. Arrow C: Plants take in CO₂ for photosynthesis; plant respiration releases CO₂ (arrow away from plant). The arrow pointing toward the plant for respiration is wrong.
4. Arrow D: Factory emissions release CO₂ into the atmosphere, so the arrow should point away from the factory, not toward it. This direction is wrong.
5. Arrow E: Sunlight provides energy for plant photosynthesis, so the arrow pointing toward the ecosystem is correct.

Answer:

B. Arrow B, C. Arrow C, D. Arrow D