Which of these examples is a limitation of a food chain model?

A.
It is more dangerous to study a food chain than a food web.

B.
Food chains do not show the exact relationships between organisms.

C.
Food chains are not a realistic representation of an ecosystem.

D.
It is more difficult to create a food chain than a food web because food chains are more complex.

B. Food chains do not show the exact relationships between organisms.

How does energy flow in a food chain?

A.
from the Sun through producers to consumers

B.
from the Sun through consumers to producers

C.
from producers through Sun to consumers

D.
from consumers through the Sun to producers

A. from the Sun through producers to consumers