The answer is geothermal energy. This energy can be harnessed to generate electricity. The energy emanates from the deep core of the earth due to the radioactivity of the rocks in the region. The radioactivity heats Magma from the mantle which subsequently heats the rocks and fluids in the earth crust.
Nitrogen is not necessary <span />
The answer is c
Because homeostasis is the state of steady internal, physical, and chemical conditions
I think verterbrates have a back bone others do not. I only THINK so.