Overfishing at sea can lead to an extinction.
Overfishing is a serious problem, it affects lot of marine species, at every water corner of the Earth. If the fishing is not controlled strictly it leads to extinction of the marine wildlife, lot of species have already been extinct, thousands are on the verge of extinction. Also, the extinction of a single species makes big problem in the ecosystem, removing lots of species has huge impact on lots of ecosystems that are connected and the consequences are irreparable.
Astronomers use redshirts to track the rotation of our galaxies, tease out the subtle tug of a distant plant on its parent star, and measure the expansion rate of universe.
Scientific Thinkers didn't accept it immediately because its has no proof or lack of information that needed to be prove by all others scienctific thinkers
I think the answer is
glaciers because glaciers are just frozen ocean water
