Explanation:
under what circumstance does a negative cell presents An antigen to another negative cell
<span>Occurs in the kidneys, at the site of functional subunits called nephrons.
Hope this helped.
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Answer: Biodiversity hotspots are home to nearly 20% of the world's population. Option B is most accurate.
Explanation:
A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation.
Biodiversity hotspots host their diverse ecosystems on just 2.3% of the planet's surface, however, the area defined as hotspots covers a much larger proportion of the land, so much that it hosts about twenty percent of the world's population.
The answer would be C. ABO blood types because the blood type AB is known as a codominant one