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The unity of man and nature. Human beings live in the realm of nature, they are constantly surrounded by it and interact with it. The most intimate part of nature in relation to man is the biosphere, the thin envelope embracing the earth, its soil cover, and everything else that is alive.
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2. If Tom doesn't work harder, he will not pass his exams.
3. If Jim and Kath buy a new car, they'll drive to Spain next week.
4. If we don't go to the supermarket, we won't have any food for supper.
5. If my sister reads your letter, she would be very upset.
Explanation: I hope I helped! If I didn't, please don't attack me! :(
Answer: Playful and Merry is the right answer.
Hope this Helps. :)
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