When an organism joins a new population, its genes become part of the new population’s gene pool. How does this gene flow affect populations? Gene flow between populations has no effect on the gene pool.

Gene flow between populations increases genetic diversity over time.

Gene flow between populations decreases genetic diversity over time.

Gene flow increases the chance for reproductive isolation which can cause new species to form.

no i don't feel that humans have oversubscribed some medications

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.