PDF chapter test TRY NOW
Long answer the following question:
Although wood has a very high calorific value, we still discourage its use as a fuel. Explain.
There are several disadvantages to burning wood.
These are the following:
(i). Wood burning emits a lot of smoke, which causes diseases.
(ii). Cutting down trees for wood fuel causes , which is highly harmful to the environment.
(iii). provide us with a variety of useful substances.
When trees are cut down, all valuable substances extracted are destroyed to obtain .
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