V-shaped valley
As the river erodes downwards the sides of the valley are exposed to freeze-thaw weathering which loosens the rocks (some of which will fall into the river) and steepens the valley sides. The rocks which have fallen into the river help the process of corrasion and this leads to further erosion.
Answer: C. polyp
Explanation: The polyp is a sac-like stage of a cnidarian, with the mouth and tentacles on top.
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Answer:
I think it is (1)
Explanation:
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