Although _[blank]_ makes up 78% of the Earth's atmosphere, it is not directly usable by most living organisms.
2 answers:
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Answer:
Why do we wear white or light coloured clothes in summer?
- We wear white or light coloured clothes in summer because white coloured clothes reflect most of the sun's heat and absorb very little of the sun's heat and keeps our body cool.
Why do we wear black or dark coloured clothes in winter?
- We wear black or dark coloured clothes in winter because black coloured clothes absorb most of the sun's heat and keep our body warm.
Explanation: