Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
Answer: "photosynthesis" .
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<u>Note</u>: These small, moving "green disks" seen while observing an <em>Elodea</em> plant cell—under a microscrope— are "chloroplasts". The "chloroplasts" are organelles that ar responsible for "photosynthesis" .
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<span>Magnetic resonance imaging
is a technology that uses magnetic fields and radio waves to produce high
quality 2 or 3 dimensional images of the brain structure without using
radioactive tracers and ionizing radiation. The magnetic resonance intensity is
proportional to the density of the protons in various tissues.</span>
Well there are three reasons
it drains into rivers, streams, etc. or
it seeps into soil and gather underground as ground-water
or
falls into high mountains and freeze and in the summer it will melt and flows into the rivers
