Halp meh study the image. at which point is cool air circulating beneath warm air? 1 2 3 4

1

Explanation:

Cool air is denser (heavier) than warm air. During a hot day, when the air mass in a region is heat by the sun, it warms up and picks up more moisture. The warm moist air rise as it is pushed up by the denser air mass coming from the adjacent cooler regions. As the warm air rises, it cools with altitude and the moisture in it condenses to clouds that later precipitate as rain.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides