Answer:
It's the Inner Core
Explanation:
It is the innermost layer of planet earth & composed primary of Iron and Nickel , This is because through the geological time Iron and Nickel which are heavier elements sank down and formed the core.
And plus, the Crust (The land you stand on when you walk outside) is made of soil and rock, and the Mantle (Under the Crust) is hot liquid like lava.
It has caused more pollution
....................I’m really not sure but c
Vegetation catches precipitation on its leaves, slowing it down or holding it for a while. This gives the ground more time to absorb the water, so there's less runoff.
