Read the following text and fill the gaps with correct form of verbs as per subject and context. Deforestation (a)_____(mean) cutting down trees at random. It (b)______(cause) mainly by a group of dishonest people. They cut trees (c) _____ (make) profit. Ordinary people also (d) _____ (use) trees as fuel and furniture. Because of (e)_____(cut) more and more trees, we are going (f)_____(face) a great danger in the coming future. We (g) ____(know) that oxygen (h) _____ (supply) by trees for animals. Without (i) ____ (take) oxygen, we cannot live a single moment. If trees (j)____(cut) down in this way, the amount of carbon dioxide (k) _____ (increase) in the atmosphere. As a result, the heat (l)______ (rise). It (m) _____ (call) greenhouse effect. (n) _____ (enjoy) a peaceful life, we must plant more and more trees.