Question

What are the consequences of large and prolonged rain?

Answer 1

Explanation:

prolong rain cause in flood and soil erosion

Answer 2

Answer:

Excess of rainfall may lead to rise in the level of water in rivers, lakes and ponds. The water may then spread over large areas causing floods.

Explanation:

Floods occur when the flow of a river is very high. High flow leads to the river breaking its banks and overflowing. The two main causes of flooding are prolonged, large and heavy rain.

Long Rain

After a long rain, the soil becomes saturated and can no longer absorb water. When the soil reaches the saturation point, additional rainfall cannot penetrate the soil, increasing surface water runoff, which in turn increases river flow.

Heavy rain

During a heavy rain, such as a thunderstorm, the rain can fall so fast that it cannot penetrate the soil, leading to a rapid increase in surface runoff and can cause a flash flood (rapid increase in river flow).

Impact of floods on people, economy and environment.

Floods have many effects that affect the environment and all living organisms on Earth.

• The effects of flooding can be extensive; Floods can affect people socially, economically and significantly on their health and have caused thousands of deaths worldwide.

• Social impacts are usually greater in poorer countries. There are several reasons for that including; flood defenses are of lower quality and not maintained to the same standard, people cannot evacuate as easily as people from richer countries, poor quality buildings are more likely to collapse than in richer countries, and poor quality sewage systems mean a greater risk of contamination and illness.

• Absolute economic impact: generally greater in richer countries than in poorer countries because richer countries have more valuable buildings and infrastructure than poorer countries.

• Relative economic impact: is greater in poorer countries, although poorer countries have lower values of buildings, infrastructure and crops, damage to them affects the economy and as a result countries have less money to recover.

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