Answer:
space
Explanation:
they figured it out going to space and since a star is a small peice of the sun they can't touch it it's impossible without getting heat burns or dying so they ither observe a star using a telescope or went to space for days
1)Can decrease the soil erosion as the roots of vegetation will facilitate.
2.) it decreases the pollution in waterways as it slows down the runoff
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You would expect to find elastic fibers
Cholera, its a water borne disease.
