1. Adaptations and variations show evidence of past
a. Evolution
b. Offspring
C. Diversity
d. Fossils

but there is no

i guess you forgot putting it.

i thinking chemical change

i think that it is plants

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.