HELP I WILL MARK BGRAILIEST

first add 10 then multiply it by 70 then dividefirst add 10 then multiply it by 70 then dividefirst add 10 then multiply it by 70 then dividefirst add 10 then multiply it by 70 then dividefirst add 10 then multiply it by 70 then dividefirst add 10 then multiply it by 70 then dividefirst add 10 then multiply it by 70 then divide

Explanation:

wfqwfqwf

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.