knowledge of the cell cycle has led to improved means of treating cancer. the drug 5-fluorouracil, which blocks the synthesis of thymine, inhibits the cell cycle from moving out of which phase?

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.

synapse nervous system