Question

The diagram below shows how matter flows among nonliving and living parts of an ecosystem.

food web in soil

Which statement describes matter flowing from a nonliving part of the ecosystem to a living part, then back to a nonliving part?
A.
Fungi in soil are eaten by nematodes, which are then hunted by centipedes.
B.
Carbon dioxide in air is taken up by trees, and then it becomes organic matter in soil.
C.
Ground beetles on the ground are eaten by birds, which die and become organic matter in soil.
D.
Carbon in organic matter is broken down by bacteria, and then it is eaten by nematodes.

Answer 1

''Carbon dioxide in air is taken up by trees, and then it becomes organic matter in soil.'' best describes matter flowing.

What describes flowing of matter from non-living, living and then non-living?

We know that carbondioxide gas is non-living matter which is absorbed by trees for photosynthesis that are living and after the death of trees, their bodies turn into organic matter which is also non-living.

So we can conclude that ''Carbon dioxide in air is taken up by trees, and then it becomes organic matter in soil.'' best describes matter flowing.

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