I think its pulmonary circulation too.
Answer:
cuting trees, killing animals, and pollution.
The volcanoes may be dormant or not as active. Only very active volcanoes will be known for erupting a lot.
Answer is for the earths core to cool enough for convection to stop, then the plates would have no convection current to move them.
Explanation: If the Earth's core were to cool down, the convection currents in the mantle would stop moving. Since the convection currents drive the plates, they would stop moving.
