Ok so this is biology well vegitation is certain plants well the plant in its inside have certain medicines that cant be used on humans or animal *rocks *Trees those are what that medicine can go to well on sediment that medicine causes the sedeiment to slow goes sediment can break and kinda disolve like type well that medicineslows it down and keeps sedement longer teachers rteach what they think if u feel i did something wrong please let me know and i can do more research
