well it helps by removing rock that does not belong in that area but it can also move the rock in a place the rock should be........ therefore erosion is both helpful and nonhelpful.
by farting
because
They harm plant buy cutting down trees. This causes soil erosion and pollutes rivers.
They harm plant buy cutting down trees. This causes soil erosion and pollutes rivers.
Flooding/ trees broken/ erosion/ scattered debris
They help to prevent erosion by holding the soil together.
acid erosion, citrus acid, sugar, build up of plaque
They are both natural. They sometimes cause harm to the environment.
harm
No, they do not.
harm
Trees can help prevent soil erosion.