Which is not true about eccrine/merocrine sweat glands?

Answer;

They begin to function at puberty (not true)

Explanation;

-The sudoriferous (sweat) glands are small tubular structures situated within and under the skin (in the subcutaneous tissue). They discharge sweat by tiny openings in the surface of the skin.  There are two types of sudoriferous glands; that is; eccrine and apocrin glands.

-Eccrine is the most numerous type that is found all over the body particularly on the palms, soles of the feet, and forehead. Apocrine is mostly on the armpits. They end in hair follicles instead of or pores.

not sure if this what   you'r looking for would be percent composition

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.