The approximate atomic mass of an atom is determined by adding what two subatomic particles? (A) protons and electrons
(B) electrons and neutrons
(C) protons and neutrons
(D) none of the above

1. a tropical dry forest carries out more rapid nutrient cycling

what's the question ?

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.