Give one word for the top most layer of tall trees that forms an umbrella.
What will happen if:
(a) we go on cutting trees.
(b) the habitat of an animal is disturbed.
(c) the top layer of soil is exposed.
Give one word for the following: When trees are planted in an area that did not have trees before.
Give one word for the following.
A green layer formed on copper when it corrodes.