the oldest ocean floor is only 180 million years old, because the oldest crust is destroyed at subduction zones.
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What are subduction zones?</h3>
According to NOAA, tectonic plates are fragments of the Earth's hard outer layer that steadily travel across the surface of the globe over millions of years (opens in new tab). (This is a fundamental principle of the theory of plate tectonics, which holds that pieces of the Earth's crust slide across the lower mantle and carry continents with them.) According to the U.S. Geological Survey(opens in new tab), the Earth's crust and the top part of the mantle, a thick, heated layer under the crust, make up that outer layer, also known as the lithosphere (USGS). This lithosphere material curls downward into the heated mantle during subduction zones, when two tectonic plates collide and one slides beneath the other.
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I can really only think of one but the light pollution blocks out the night sky and less stars are visible, but if you go out into the country you see hundreds of stats rather than just 10 or something.
Answer:
D
Explanation:
Deforestation involves totally cutting down of trees without replacement hence destroys the cover which exposes biodiversity to destruction
A) it occurs in areas downwind of the source.
