<span>Answer: B) Low tide
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<span>There are two types of tides created by the gravitational
force of the moon: the high and the low. The one which occurs when a coastline
is within a tidal bulge is the low tide. Coastal areas experience two high and
two low tides every lunar day and it takes six hours and 12.5 minutes for the
water at the shore to go from high to low, or from low to high.</span>
The major function of the contractile vacuole of amoeba is osmoregulation. The solute concentration found in the cell of amoeba's cytoplasm is more than the solute concentration in the freshwater that surround the external part of the organism, thus, water enter the cell through osmosis. The contractile vacuole collect the excess water and expel it through an opening in the cell membrane. By doing this, the contractile vacuole maintains the water balance in amoeba. This how the contractile vacuole normally operate.
In a situation where amoeba is placed in seawater, then water from the cell cytoplasm will rush out of amoeba cell, because of the higher salt content of the surrounding medium. The contractile vacuole will respond to the situation by increasing its contraction and pumping water out the cell in an accelerated manner, this will lead to the shrinking of the cell.
The viral capsid and envelope <span>plays a role in attaching a virion to the host cell.</span>
Answer:
Likewise, competition for food among deep-water fish that eat the same types of food will .
Explanation:
Natural selection will condemn all deep-sea fish to the same environment that conditions them, those that cannot develop gills will be exposed to extinction, this refers to the theory of the evolution of the fittest by Charles Darwin.
