Which of the following statements about food chains is true________
A. A food chain is the channel through which energy flows in an ecosystem
B. The parasitic food chain is the main food chain in terrestrial ecosystems
C. Along the food chain, animals get bigger and bigger
D. In the food chain, each animal can only belong to a specific trophic level according to the animal's diet.
Answer:A
Which of the following statements about food chains is true________
A. A food chain is the channel through which energy flows in an ecosystem B. The parasitic food chain is the main food chain in terrestrial ecosystems C. Along the food chain, animals get bigger and bigger D. In the food chain, each animal can only belong to a specific trophic level according to the animal's diet.