Put all possible questions to the following sentences. 1. We study different subjects at the college. 2. She is reading an interesting article now. 3. They lived in the hostel last year.

1)

What kind of subjects do we study at the college?

What subjects are taught in our college?

2)

What article is she reading now?

Is that famous article?

Does she like reading articles?

3)

Where did they live last year?

Was the hostel in the territory inside the government?

The world's population is an important issue. For hundreds of thousands of years, the human population grew at a low but steadily increasing rate. Then, in less than last 200 years, the world population went from several hundreds of millions to more than 6 billion people.
The Earth has certain limitations and in particular, there are limits to growth of things that consume the Earth resources.
Many people believe that these resources, both the Earth and the human intellect are endless and population growth can continue and that there is no danger that we will ever run out of anything. "Yet, many people had predicted catastrophic shortages of natural resources that would follow, because of continued population growth. Countries try not to raise this subject to the public much, because they do not want to raise panic.
Nowadays they have to do something about it before it gets out of hand. They try to censor it and sometimes lie. Do you know that the USA itself consumes 50 per cent of all electricity produced on the Earth? The population of the USA is just around 285 millions people. It is an interesting fact.
Overpopulation is like a big magnifying glass making little problems into big ones.
Overpopulation is destroying our environment, lowering the standard of living, and generally degrading the quality of life.
Overpopulation also causes more violence, environmental pollution that reflects on land degradation, tropical forest destruction, global warming and destruction of coral reefs. 6 billion member society has to get a huge food infrastructure, so society start producing genetically made food, which is cheaper than ordinary one but might reflect in the nutrient balance. For example, in China it is prohibited to have more than one child for a couple. There is a very dangerous situation in India. By the year 2025 its population might reach 1.5 billion people.
The planet urgently needs population control. Birth control, abortion and quotas need to be supported, if the planet is to remain habitable in the long term.
Every second five people are born and two people die, so there is a gain of three people. At this rate, the world population is doubling every 40 years and would be: 12 billions in 40 years, 24 billions in 80 years and 48 billions in 120 years. But the Earth could provide food only for 20 billions people.

Global warming has become a serious problem in modern world. It is referred to potential changes in climate, which can lead to the rise of global temperature. This term has been presented by scientists. They work hard trying to solve the problem. Otherwise, global warming can produce really dangerous climatic changes apart from a rise in temperature. For example, over the past 100 years the average temperature rise was about 1 degree. According to some scientists global warming is the result of the industrial revolution. If it continues, it can destroy our civilization. One of the most important reasons of global warming is the air pollution. More and more factories are being built in different countries. By burning oil, coal, gasoline, even natural gas, they add more carbon dioxide to the atmosphere. Cars also influence the atmosphere badly by burning many liters of oil and releasing harmful gases into the air. As a result the ozone layer of our Earth is being destroyed. All these activities unfavourably change the Earth’s heat balance. This is what we get in return: the ground becomes very dry, a lot of rivers and lakes dry up, the forests start burning, the glaciers melt, people and animals start to faint. And these are not all the outcomes of global warming. Nature becomes really angry with us. We need to become more attentive and caring to it if we want to save our planet. There are several ways to do it. At first, we should start saving natural resources, such as water, wood, land and air. It would be a good idea to recycle the things that we don’t use anymore. Cars should switch to electric refueling, while factories shouldn’t isolate carbonic gas. We should also reduce the use of different sprays and lacquer, which destroy the ozone layer. If we take these simple measures, we might save our planet.