Which of the following is a human construct used to break down the complexity if an ecosystem?
a. trophic levels
b. ecological pyramids
c. the 10% rule
d. the food chain

The answer would be (B)

Explanation:

Ecological pyraminds were made to give an easy showcase of how earths ecosystem works.

trophoc levels are a part of the food chain, and the 10% rule is the amount of biomass that is carried up the food chain, all of which are involved inside ecological pyramids.

hope this helps!

a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.