1.About how many grams of salt can be found in a humans body?
2.About how much of a persons body weight is lost by the time they feel thirsty?
3.What is the rarest naturally occurring element on Earth?
4.What are the only two non-silvery metals?
5.What is the only letter that does not appear on the periodic table?
6.Why is Mars red?
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Answer:
1. 0.4 per cent of the body's weight.
2.You lose 2 percent of body weight every if you feel thirsty.
3. Element astatine
4. Gold and Copper
5. Letter J
6. Because it has a layer of rusty dust covering its entire surface.
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