Questions about water, answers, questions about water

Paper mills use a lot of water and are polluted.

1）.10 to the eighteenth power of 10 billion = 10 to the sixth power cubic meter.

3）.10 to the sixth power 10 to the sixth power cubic meter.

It is a water-scarce country.

We will further promote the construction of a "water-saving society". A water-saving society is one that uses as little water as possible to create more value and services. A water-saving society is an important part of a "water-friendly society", because by using as little water as possible, more water resources can flow in the river, and the construction of water conservancy projects can be reduced, and the discharge of sewage will be reduced.

There are two sides to everything, and there is no such thing as a single pure thing;

2. Take the feelings we often talk about as an example, we have always believed that feelings are a very pure thing; But it can only exist simply under certain special conditions, and it will not always be the same.

People have come up with ways to control the water so that it does good and not bad:

1. Drinking water: Water is the basis for human activities, and water can supplement the water needed by human beings to maintain normal activities. Any living thing is inseparable from water, and it is because of water that there are current creatures on the earth;

2. Water transportation: cruise ships and cargo ships, sea transportation provides a new way for transportation;

3. Swimming pool: the use of swimming pools and fountains gives the water entertainment and ornamental value;

4. Hydroelectric power: The most important thing is the number of energy contributions, through which the problem of insufficient power is solved.

Water is the blood of human beings and the source of life. Children, what would the world be like if there was no water on earth?

If there is no water on earth, we will no longer be able to enjoy the beautiful Yunlong Lake, the Yangtze River and the Yellow River will be cut off, the lakes will dry up, and the vast ocean will disappear. If there is no water on the earth, every tree will wither, patches of green grass will burn yellow, and flowers will wither. In the past, the mountains of the forest sea were reckless, and only the rugged rocks remained.

If there is no water on the earth, the plants will die, the sorghum and wheat in the fields will no longer be verdant, the fruits and vegetables in the fields will no longer be fat and green, and the fruits of the trees will no longer hang on the branches. The hoarse cries of birds for help will bring tears to tears, the dying struggles of fish will be helpless, the desperate cries of puppies will make people's hearts twist, and the animals will die one by one. If there is no water on the earth, people are hungry and have no water to cook; Tired, there is no water to wash away the exhaustion; thirsty, no water moistens the smoky throat.

According to scientists' research, it is believed that people can live for 10 days without eating, but only 3 to 5 days without drinking water. Children, I don't know if you have ever seen such a public service announcement: there is a faucet on the TV screen, which is dripping water with difficulty, and the dripping speed is getting slower and slower, and finally the water runs out.

Then a pair of eyes appeared on the screen, and a tear flowed from the eye. This was followed by the phrase: "If humans do not value water, then the last drop of water we can see will be our own tears."

In order to make the world full of life forever, let's protect water together! Every day in our lives, we should cherish every drop of water and cherish the water of life with practical actions!

Elect below. Different types.

of water: DA, boiling water.

b. Sewage. c. Tears.

d. Heavy water. How much water is there on Earth.

1.8 billion cubic kilometers.

How much fresh water is in it.

How much of the Earth's total water is the amount of fresh water that humans can actually use.