Two questions?(10 points best answer)?

Question

Explain why almost all of the energy we use on Earth comes from nuclear energy.

Give two examples of how hydropower can damage ecosystems.

can you help me with these?

thanks. :D

Answer 1

Um, most of te energy we use on earth comes from burning fossil fuels. However, seing as these have almost run out we are starting to depend more and more on Nuclear energy.

Hydropower requires a dam to be built. In daming an area you are destroying some of the sorrounding area. (For example the dam built in Egypt has almost destroyed the area around the nile). Also the pipelines from Hydroelectric dams can destroy the evironment.

Answer 2

1 Nuclear energy is the most efficient form of energy but the most dangerous. That's why its used the most.

2 Hydropower can damage the ecosytems because it cuts off water supply to them and the animals die or in some cases people.

Answer 3

(1)Man generated energy does not come from Nuclear energy, it is the Sunlight (Sun's  energy)  that is  from Nuclear energy.

(2) Hydropower though is called clean energy but, it causes environmental damages in following ways:

(a) destruction of  forest and ecosystem around its appurtenant structures and drying up of river segments between its toe and Tail water end.

(b) submergence of forest due to impounding of water and becoming source of emission of methane..

(c) dumping of muck along drainage line causing siltation of downstream segments of hydropower project.

thnks

Answer 4

Nuclear power is any nuclear technology designed to extract usable energy from atomic nuclei via controlled nuclear reactions. We need nuclear energy to survive and produce products.

hydropower causes more damage to downstream floodplain can affect the creatures living there