Science has told us so much about the moon that it is fairly to imagine what it would be like to there. It is certainly not a friendly place. As there is no air or water, there can be no life of any kind. There is no variety of scenery either. For mile after mile there are only flat plains of dust with mountains around them. Above, the sun and the stars shine in a black sky. If you step out of the mountain shadows it will mean moving from severe cold into great heat. These extreme temperatures continually break rocks away from the surface of the mountains. The moon is also a very silent world, for sound waves can only travel through air. But beyond the broken horizon, you see a friendly sight. Out earth is shinning more brightly than the stars. From this distance, it looks like an immense ball, coloured blue and green and brown.
Questions:
1. Why is the moon unfriendly?
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2. What can be seen there?
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3. What effect of extreme temperatures has on the moon?
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4. Why is the moon said to be a very silent world?
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5. How does the earth appear from the moon?
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How does expert system helps in ———
—-Static games like chess
—-To check pollution in rivers or other water bodies
sorry I really don't know the answer
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