Question

how are sand dunes and loess formed​

Answer 1

Explanation:

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Answer 2

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• The particles that make up these loess were probably picked up by winds from the outwash left by glaciers.
• Sand dunes are found wherever there are strong winds and enough loose sand, such as in the Sahara.
• Sand dunes also form on sandy river floodplains in semiarid climates and on sandy beaches