Environmental science is the science including ecology, biology, physics etc. <span />
Answer:
The flow of heat from Earth's interior to the surface is estimated at 47±2 terawatts (TW) and comes from two main sources in roughly equal amounts: the radiogenic heat produced by the radioactive decay of isotopes in the mantle and crust, and the primordial heat left over from the formation of Earth.
Habitat destruction is the cause of the loss of species because the organism have been deprived of their living requirements.