Can you help me with science? PLease?

Question

1. List some examples of water damage and how humans try to prevent damage.
Information: floods, avalanches and tsunami. And I also know how human try to prevent these damages.
I need more examples. Can you give me some more and also tell me how humans to prevent those?

2. Do any of the ways in which humans try to prevent damage caused by water create other problems? Select few examples and discuss.
Information: Humans try to prevent floods by building levees and dikes. I just know two.But I don't know how levees and dikes create problems. But I can tell you how peole build them. Here:
Levees, long walls of earth, are built along the banks parallel to a river. They are designed to keep the river contained during flooding.
Dikes protect land that has been reclaimed from the ocean. Poeple also bulid dikes around their houses and towns when a flood threatens.
Thats all I know. Except this, I need more examples and how they create problems.
Please help me!!!

Answer 1

Water can damage human civilisations in many ways:

Too much, too little, too salty or too bland. The distribution is not matching the distribution of human population.

How do we try to prevent the damages caused by these vagaries? Try to build dams to prevent floods, try to build storage reservoirs to store water where it is too little, try to desalinate the water and make it fit for human consumption and add salts (like fluoride) to prevent dental cavities etc.

2. The solutions do add their own problems. Large dams and water storage reservoirs for example affect the ecology of the region, may cause earth quakes by stressing the rocks, change the climate and promote the breeding of mosquitoes etc. and thus cause diseases. Desalination of water produces a larger quantity of saline water in the process of producing a small quantity of good water. And such processes are energy hungry and need a lot of electricity, which in turn needs burning of carbonaceous (fossil fuels) material and thus add to the greenhouse effects of the earth.

Answer 2

There might problems due to the greehouse effect.Mabe you might want to access the Wikipedia website at www.wikipedia.org for further information as they might have articles relevant to your question

Answer 3

okay, buddy...you listed them...
However, can it be helpful, if we say,
polluted drinking water... causes many diseaes and spreads them...
Ways... govt. working to provide clen water, etc.

Answer 4

I give up... just WHAT does this question have to do with PHYSICS? which is the topic of this string.