When you are exposed to sunlight for a long time, your skin, which otherwise appears normal, gets heavily tanned. What could be
the reason? A.The genes for melanin pigmentation remain turned on and prepare more melaninthan usual to protect the skin from photo-damage when it is exposed to sunlight for long time.
B.The genes for melanin pigmentation remain turned off and synthesize more melanin than usual to protect the skin from photo-damage when itexposed to sunlight for a long time.
C.The genes for melanin pigmentation are switched off to stop the synthesis of melanin to protect the skin from photo-damage when it is exposed to sunlight for a long time.
The answer would be '<span>A.<span>The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time.' </span></span>
I think it would be the first one: The genes for melanin pigmentation remain turned on and prepare more melaninthan usual to protect the skin from photo-damage when exposed to sunlight for long time.
I could be wrong, i had a similar question in the 8th grade, I can't remember.
The number one determining factor in the types of organisms that can live in a body of water is salinity, the amount of salt in a body of water. Hope this helped!
