Trees are a vital part of our environment. (a) — they bear a great impact on the climate. (b) — We are not kind and careful about them. (c) — we destroy trees at random. (d) — one day the country will bear the consequence of greenhouse effect. (e) — ours is an agricultural country. Our economny depends on agriculture. (f) — trees play a vital role on our climate. (g) — Trees keep soil strong and protect it. (h) — trees save us from flood and many other natural calamities. (i) — trees provide us timber which is of great use specially in construction works and for making furniture (j) — trees are our best friends.

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