Which is not an example of matter and energy cycling through living things? a. trees growing b. plants absorbing carbon dioxide? c. salmon eating shrimp. d. a drop of water falling through the sky?

The answer is D. In this case, there is no cycling of energy or matter. In the choice A, water and nutrients are absorbed from the soil to make up the tree. In choice B, the carbon dioxide from the atmosphere is used to make carbohydrate in the tree. In choice C, part of the biomass of the shrimp is converted into biomass and energy of the salmon.

C. to continue the species.

The main function of the reproductive system is to make sure that the human species survives. It is not necessary for every human being to produce children, but in order to continue our human species, at least some people have to have children.

Hoped I helped!