Consider this living plant a system. to be alive, the plant needs energy. as a plant, it produces its own usable chemical energy by photosynthesis and uses that same energy through cellular respiration. one output of photosynthesis is a critical reactant or input for respiration. that is

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.

answer; engram;

answer; control group;