Evolution is a change in a. a living thing as it grows older
b. a species over time
c. characteristics of living things
d. the history of the Earth
2
Homologous body parts are similar in
a. function
b. structure
c. both a and b

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.