2900 km in depth. It is the largest of Earth's zones. It is solid rock, but parts of it flow slowly upward or downward, depending on whether it is hotter or colder than the mantle next to it.
What is mantle?
200
Form at plate boundaries because of intense stress that results when plates separate, collide, subduct, or slide past each other.
What is fault zones?
200
Atmospheric Hazards, Biological Hazards, and Geological Hazards
What are the three disaster categories?
200
Smog and acid rain.
What are the two types of secondary air pollution?
200
The world would escape back into space and Earth's average temperature would be about 16 degree colder
What will happen if we do not have greenhouse gases ?