A figure 8 shape is how the blood goes throught the body
Climate changes thats what im guessing .. not too sure though ... sorry
Oxytocin. It apparently kick starts labour and causes contractions.
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.
