The primary problem is the greenhouse effect. Greenhouse effect is when some gases (including CO2) absorbs some portion of sun's heat to make the atmosphere warm to support life. But when the amount of CO2 etc. increases in the atmosphere, it heats up more than it is required. So, by limiting CO2 emission, we can solve this problem.
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contagues: when a diesease spreads from one person or organism to another by direct or indirect contact.
helpful: giving or ready to give help
Answer: she was scared and not going to annex
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