Question

Give reasons why:
i. Flood plains are very fertile.
ii. Buildings collapse due to earthquakes​

Answer 1

Answer:

When it floods, it deposits a layer of fine soil, rich mineral salts, nutrient-rich silt, sediment, and distribute it across a wide area. These sediments make the soil very much fertile and lead to the formation of a very flat fertile flood plain.

ii . Most collapses that occur during earthquakes aren't caused by the earthquake itself. Instead, when the ground moves beneath a building, it displaces the foundation and lower levels, sending shock waves through the rest of the structure and causing it to vibrate back and forth.

Answer 2

Answer:

1)Flood plains are naturally very fertile due to the river sediment which is deposited there. This sediment is good for growing plants on the flood plain.

2)Most collapses that occur during earthquakes aren't caused by the earthquake itself. Instead, when the ground moves beneath a building, it displaces the foundation and lower levels, sending shock waves through the rest of the structure and causing it to vibrate back and forth.

Explanation:

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