A :-) Sickle cell disease occurs more often among people from parts of the world where malaria is or was common. It is believed that people who carry the sickle cell trait are less likely to have severe forms of malaria.
<span>Pioneer species is the first species to populate an area</span>
This would be called--Visual.
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The tilt of the earth's axis, which essentially "turns" certain parts of earth so that some parts receive more direct sunlight
The answer to the given question (though the question isn't given), I can assume this is the same as a previous one as the answer is C.
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