PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoLong 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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