Question
Why does evaporation cool a liquid?
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Distinguish between the following pairs in one or two sentences for each:
Striated and unstriated muscles.
What is vaccum? Explain why, sound cannot travel through vacuum?
A coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if the coin and the piece of paper are dropped in vacuum? Give reasons for your answer.
Write down two advantages of fertilizer over manure.
Differentiate between healthy and disease free.