Is one principle method for movement of substances into and out of cells.

i don't know, but does anyone wanna be friends? i'm doing my homework at 1: 49 in the morning : /

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.