Why is it important to avoid applying too much nitrogen fertilizer?
A. Too much nitrogen in surface runoff can poison fish.
B. Too much nitrogen in surface runoff can cause algae to overgrow.
C. Too much nitrogen can increase the salinity of soil.
D. Too much nitrogen can buffer cells from extremes in pH.

Explanation:

too much nitrogen can buffer cells from extremes in pH

answer: c

explanation:

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.