Question

Why some of the waste materials are mixing with soil quickly while some do
not? ​

Answer 1

Explanation:

because some waste materials are biodegradable which decompose and mix with the soil quickly with the help of microorganisms.

while in the other hand some waste materials are non biodegradable which cannot be decompose or mix with soil quickly.

Answer 2

because some waste materials are biodegradable which decompose and mix in soil very quickly with the help of microorganisms but the some other materials doesn't decompose quickly because they are non degradable and the microorganisms also couldn't help them to mix in the soil