When farming, overgrazing, climate change, and/or seasonal drought change farmland into land that cannot support plant life, it is called

a. desertification
b. depletion
c. deforestation
d. monoculture

i think it's c but i need someone to tell me if i'm wrong or not. : )

What was the land like over 500 million years ago? what was under the sea?

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary

Why is carbon the backbone of liveing things