An ecosystem has experienced a recent decrease in its plant populations. which of the following is a possible reason for the decline? a. an increase in the number of predators b. a decrease in the number of prey c. a decrease in the available water d. an increase in the available land space

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

What are some natural processes that represent physical and chemical changes?