What does a diagram of a food chain show?
a.
the sun's energy cycle
b.
interconnected pathways of energy flow in a community
c.
feeding relationships of all organisms in an ecosystem
d.
the flow of energy from a producer to a consumer

C. Explanation: In a food chain, it shows what organism eats what. BUT... not all animals eat other animals. The decomposers are at the bottom. The grazers are in the middle, meat eaters are in between us and the grazers, and we are at the top! here is an example!
Food pyramids are just like food chains.

B) Plasmid

Explanation:

Plasmids are the correct terms to call bacterial chromosomes by.

These plasmids are the chromosomal DNA which prokaryotes, like bacteria, have.

This is because they do not have nuclei, which eukaryotes do. This makes answer choices A and D wrong because they involve the nucleus.

Answer choice C is also wrong because it is not the term to call bacterial chromosomes, although plasmids do contain messages.

So, answer choice B is correct.