Of the four most abundant gases in our atmosphere, which one shows the greatest variation at the earth's surface

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.

i wish i could with all of them i can barley see the first one so here's the answer to the first one b