They are important because they contribute to clean air and water for 500 million people this is because they help sustain a healthy forest
ANSWER: Quaternary
just took the quiz on edge
100,000 years ago is your answer
Aceibitorshope this helps
B) the less porous, the less permeable
Porous means "full of holes."
Permeable means "stuff can go through it."
The more porous something is, the more permeable it is.
