Why should the environmental aspects be carefully looked into before building huge dams?

(i) Environmental aspects must be carefully looked into before building huge dams. Answer: Construction of a huge dam causes large scale destruction of the natural habitats of plants and wild animals living in the area. Hence, environmental aspects must be carefully looked into, before building huge dams.

Why environmental aspects must be carefully looked into before construction projects?

Environmental aspects must be carefully looked into before building huge dams. Due to dams large areas of human habitation and agricultural land will get submerged by water. Apart from the above mentioned areas, large ecosystems will also get submerged and destroyed.

What is the purpose of drilling Class 8?

Drilling: Drilling is another method of extraction in which deep wells are bored to take out minerals. Quarrying: Quarrying refers to the process of extraction in which minerals lying very close to the surface are extracted just by digging them out.

Why are minerals useful for US Class 8?

Explanation: Minerals are used for several purposes as they provide fuel to industries and help in producing industrial products and metals like iron, steel, etc. Minerals like coal are used as fuel in industries and a source to provide electricity. Natural gas and petroleum are also part of minerals used as fuels.

How do dams impact our environment?

Dams store water, provide renewable energy and prevent floods. Unfortunately, they also worsen the impact of climate change. They release greenhouse gases, destroy carbon sinks in wetlands and oceans, deprive ecosystems of nutrients, destroy habitats, increase sea levels, waste water and displace poor communities.

Why has quarrying become a major environmental concern?

Quarrying can become a major environmental concern because it may destroy the humus of soil which is much required for the growth of plants. It produces a lot of noise pollution due to use of explosives in order to break the huge chunks of rocks.

Which is the rarest diamond class 8?

green diamonds
You Nigeria, Libya and Angola which are known for its oil deposits, then you have towards the north you have the oil deposits and then among the diamonds – green diamonds is considered as the rarest of all the diamonds.

What is petroleum in Class 8?

Petroleum is a dark coloured,thick crude oil found deep below the ground in certain areas. The name petroleum means rock oil.It is called petroleum because it is found under the crust of earth trapped in rocks. 4)It is also a fossil fuel.It is also called as crude oil or mineral oil.

What will happen to the living world without minerals?

We need minerals to make cars, computers, appliances, concrete roads, houses, tractors, fertilizer, electrical transmission lines, and jewelry. Without mineral resources, industry would collapse and living standards would plummet. 3 million pounds of mineral resources over such a person’s lifetime.

Are dams good for environmental management?

Dams have a great deal of positive and negative effects on the environment be- sides their benefits like controlling stream regimes, consequently preventing floods, obtaining domestic and irrigation water from the stored water and generating en- ergy.

Which aspect must be carefully looked into before building huge dams?

(i) Environmental aspects must be carefully looked into before building huge dams. Answer: Construction of a huge dam creates large scale destruction of natural vegetation and wildlife in those areas, which get submerged. This is not good for the ecosystem. Hence, environmental aspects must be carefully looked into, before building huge dams.

What are the environmental impacts of dams?

Environmental aspects must be carefully looked into before building huge dams. Dams help in creating hydroelectric power, which solves the energy problems of a region. They also help farmers as the water released from dams is used for irrigation. However, dams have a negative impact on the environment as well.

When the cost benefit analysis of a dam is being made?

When the cost benefit analysis of a dam is being made the environmental costs should be taken into consideration.

Why do we need to study about the environmental aspects?

Give reasons. (i) Environmental aspects must be carefully looked into before building huge dams. (ii) Most industries are concentrated around coal mines. (iii) Petroleum is referred to as “black gold”. (iv) Quarrying can become a major environmental concern.