SECTION II
G. Give reasons for the following.
1. Deforestation is one of the causes of global warming,
2. Burning is a chemical change.
3. Nitrogen is an essential nutrient for all the organisms.
4. Photosynthesis and respiration in plants are different processes.
5. Air is a mixture, not a compound.
6. Smoke is harmful.
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Averaged over all land and ocean surfaces, temperatures warmed roughly 1 °C (1.8 °F) between 1880 and 2020, according to the Intergovernmental Panel on Climate Change. In the Northern Hemisphere, 1983 to 2012 were the warmest 30-year period of the last 1400 years.
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