Question

II. Tick (\) the true statements and cross (X) the false ones.
1. Burning of fossil fuels is one of the main reasons of air pollut
2. Polluted air affects only plants.
3. The oxygen layer absorbs the ultraviolet rays of the sun.
4. Frequent acid rain can purify the water in the waterbodies.
5. Microorganisms are killed if water is boiled for about a minu
. Water containing microorganisms can cause heart-related dis​

Answer 1

Answer:

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