<span>True - in stressful situations the body produces hormones such as adrenaline, which triggers a series of responses within the body that cause you to move faster, think faster, and heightens the senses. This is a reaction programmed into human beings since the days we lived in caves!</span>
Ultraviolet radiation may increase when there is an increase in sunspots
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by having a high genetic level of melanin in your skin, you're skin is more protected from the ultra violet sun rays. Darker skinned races have more melanin present, these races originate from hot countries where sunlight is often present; the production of melanin in their skin allows them to reflect and inhibits they're skin from becoming extremely damaged. Light skinned races don't have a large amount of melanin due to they're native countries lacking sunlight. This is an evolutionary adaptation of the human race.
Obtaining mRNA from the cell, then using reverse transcriptase enzyme to convert it into a stable cDNA (or copy of DNA) molecule for insertion into the bacterial cell.
I hope this helps!
C. Over many generations, the characteristics of these kinds of organisms also change
