The discovery of immense ridges and trenches stretching thousands of kilometers across the seafloor in the 1950s led to acceptance of the theory of
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Answer: plate tectonics
The plate tectonics is the theory in which the solid outer layer of the earth is composed of interconnected plates what move across the earth's surface. It is based on and incorporates the older theory of continental drift.
Answer:
Plate tectonic theory
Explanation:
Plate tectonic theory states that the earth contains numerous small and large lithospheric plates. These plates constantly moving from one place to another in three different ways such as
1) Convergent plate motion- here two plates move towards each other.
2) Divergent plate motion- here two plates move in the opposite direction, away from each other
3) Transform plate motion- here two plates slide passes each other.
This plate motion occurs due to the convection current that generates on the mantle because of the tremendous heat radiated from the core of the earth and this entire process is commonly known as the plate tectonic theory.
In the case of convergent plate motion, the denser plates get subducted beneath the lighter one and form a trench that appears to be a depression within the oceans and there forms a zone known as the subduction zone.
In the case of a divergent plate motion, it then forms a ridge, which later forms an ocean and the zone of separation of these two plates is known as the mid-oceanic ridge.
So a lot of ridges and subduction zones are present on earth.
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plants
soil
water
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Answer:
Plants
Explanation:
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Answer:
I think its plants...........
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Explanation:
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A centimeter is much smaller than a meter.
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Cytokinesis is the process by which a cell divides its cytoplasm to produce two daughter cells. As the final step in cell division after mitosis , cytokinesis is a carefully orchestrated process that signals the start of a new cellular generation. The separation of one cell into two is accomplished by a structure called the contractile ring. The contractile ring is a structure believed to operate in a way similar to muscle. A molecular motor, myosin, contracts the actin filaments that form the contractile ring tighter and tighter until the cell is pinched in two. The contraction of the contractile ring has been likened to tightening a purse string to close the top of a pouch. The furrow created by this pinching process is also called the "cleavage furrow," as it is the site at which cleavage of one cell into two cells occurs.