Answer
HBA HBs
Explanation:
In some parts of Africa, up to 20% of the population are carriers of the sickle cell gene. This suggests that the trait must have a survival value. The carriers of the trait have a much lower susceptibility to malaria than normal individuals. This is because the malaria parasite survives very poorly in sickled red blood cells.
Hydrogen, Carbon, Nitrogen, and Oxygen all make up amino acids.
Explanation:
because animals bacteria on n on that live in the rainforest nothing actually lives in a tundra
Answer:
Light travels in straight lines.
Explanation:
Once light has been produced, it will keep travelling in a straight line until it hits something else.
