Answer:I think it is ecology
Explanation: because ecology study about the interaction between people and environment
"Sun-centered," or "heliocentric" Copernicus thought that the planets orbited the Sun, and that the Moon orbited Earth. The Sun, in the center of the universe, did not move, nor did the stars. ... Also, both Copernicus and Ptolemy thought the orbits of the planets were circular, but we now know they are elliptical.
Answer:
Crater Lake
Crater Lake, Klamath County. Nearly 2,000 feet deep, Crater Lake, in southern Oregon, is the deepest lake in the United States. This must-see Oregon attraction is the result of the ancient Mount Mazama erupting over 7,000 years ago and collapsing into itself.
I think it might be erosion because erosion breaks down objects