Answer:
Earth has earthquakes because of the plate tectonics that move underneath earths surface.
Explanation:
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Answer:
increases, angle, 10 parsec
Explanation:
d=1/p
d: distance in parsec
p: parallax in arcseconds
One parse is defined as distance at which angle subtended by an astronomical body from earth's equator is one arcsceond.
Answer:
D. The youngest volcano of the track occurs at one end of the track.
Explanation:
Hotspot tracks can be described as a process in which lines of islands, atolls, and seamounts are produced as plate continues to move away from the lava stream, it carries built up volcanoes with it; as these volcanoes cool and subside.
Examples are Hawaii, Yellowstone and Iceland hotspots.
Answer:
Keeping lakes and rivers free of pollution.
Explanation: