Lymphocytes that are clones of activated B cells or T cells that enhance resistance to future infection are called:
a. memory cells.
b. clones cells.
c. enhanced cells.
d. recall cells.

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.