This is a type of symbiotic relationship where both organisms benefit.

it will increase due to the time span

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.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;