Answer:
Sound Waves travel fastest through the Solid medium which is why Option 1 would be correct!
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The answer is the option A. removing plants from hillsides eliminates the root structures that anchor soil. Indeed the roots of trees, further to anchor the tress to the floor, serve as a net to which the soil attaches preventing the soil of been washed and removed by rainstorms
Emigrated means they exited so due to the high amounts of pollution all the animals left which cause a population decrease
Answer:
They are rovers that are made to study Mars. For example, they can analyze the martian soil.
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Explanation: