Question

Give reason. 1.Wind is active agent of erosion in deserts. 2.A delta is formed close to the sea. 3.Sea beaches are formed by sea.

Answer 1

Answer:

Beaches are formed when the sea waves deposit sediments along the shores of the sea.

Answer 2

Answer:

1. Due to the absence of rain and vegetation desert has loose fine soil Hence, wind takes away these loose particles and causes erosion. As in desert area there is sand which is light in weight so , wind can easily erode the sand and is known as Sand Erosion.

2. It is because sea water contains a lot of electrolytes and river contains colloidal particles of sand and clay. Hence , when they meet the electrolytes of the sea water neutralise the charge on colloidal particles and results in the precipitation of sand, clay etc. Thus it forms a delta

3. Beaches form through erosion of rock or coral reefs near the edge of the ocean. Rocks are worn away slowly over millions of years into tiny particles, like sand or pebbles. ... Tides, or water moving toward the shore, and waves also create the shape of the beach.

Explanation:

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