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

PLEASE HELP

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

About how much of the cell mass is watet

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.