Which of the following are characteristic of American agriculture? a. High productivity on limited cultivable land b. A large percentage of the population engage in agriculture c. High levels of productivity and mechanization d. Low levels of land per farmer and productivity per hectare Please select the best answer from the choices provided A B C D.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

not too sure but maybe in the hot springs.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.