Answer: Ultimately, a beach erodes because the supply of sand to the beach can not keep up with the loss of sand to the sea. Most sand is transported from inland via rivers and streams. The damming of most waterways in the US has thus prevented a major supply of sand from getting to our beaches.
Answer:
by separating the most important ideas from the detailed text
Answer: cartilage
Explanation: because it is not hard or soft but it still is bone and that is what your ears and nose is made of
No beacuse the other layer may be to cold or hot for humans to survive in
