There are several different kinds of seismic waves, and they all move in ... Body waves can travel through the earth's inner layers, but surface waves can only ... the earth, body waves arrive before the surface waves emitted by an earthquake.
Fish are extremely miscellaneous species and can be classified in various ways. On the basis of FishBase, about 33100 species of fish had been illustrated in 2015, which is more in comparison to the entire combination of all the other species of vertebrate, that is, the mammals, reptiles, amphibians, and birds.
The diversity of fish species is differentiated almost equally between the freshwater and the marine ecosystems. In the Indo-Pacific, the coral reefs form the center of assortment for the marine fishes, while the continental freshwater fishes are enormously concentrated in huge river basins of tropical rainforests, mainly the Congo, Amazon, and Mekong basins.