How would planting trees and grass on a hillside protect the land from these processes?

Planting trees and grass on a hillside keeps the dirt and soil compacted so nothing fall.

I really do hope that this helps. ^_^

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles