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Answer:
Fish have gills that allow them to “breathe” oxygen in the water. Water enters the mouth, passes over the gills, and exits the body through a special opening. Gills absorb oxygen from the water as it passes over them
Explanation:
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Explanation:
To fight against new invasion disease . Antigen play a big role
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Answer:
Folded mountains are all those originated by movements and collisions of the great plates that form the earth's crust. Fault-block mountains are those that appear from a break in the crust, a fact that causes the rock blocks to move up and down and form elevations.
Explanation:
The parallel movement of the earth's crust leads to the appearance of Folded Mountains. According to this theory, Folded Mountains originate from the collision between two tectonic plates. Some of these plates are huge and can support and carry entire continents. When two plates collide, the denser one gets under the other, and this causes the sediments deposited in the basin or geosyncline that separated them to fold up. The large folds formed in the compressed sediment can break apart and form mountains. Fault-block Mountains are related to normal wide-angle faults that gradually decrease in dip with depth. Most of the Fault-block Mountains form in response to a large uplift.