Question

Define -: !)deforestation !!)ecosystem !!!)natural vegetation

Answer 1

Deforestation: Cutting down trees on a large scale. 
Ecosystem: A community where living organisms interact with themselves and also with surroundings.
Natural vegetation: A plant community which has grown naturally without human interference. 

Answer 2

DEFORESTATION :

the cutting of trees is known as deforestation.

ECOSYSTEM :

ecosystem refers to surroundings

NATURAL VEGETATION :

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temperature and rainfall are two important factors for growth of the plant in the area where rainfall is having the forests are thick and dense here as the rainfall decreases the side of concentration please also reduces search and short trees are common in the area of low rainfall aur in desert areas in cold region the growing season is very short therefore the plants can occur in started 50 in the form of mosses and lichens.