Задание

Read the text and make the sentence complete.

The population of the world is growing very fast. In the last 40 years it has doubled. In 2200 our cities will be much bigger. There will be more factories and more roads. We will need more water and more natural resources. Experts say that we must change the way we use energy and natural resources now.

Every day we throw away millions of tons of rubbish. Half of this is paper that we can recycle and use again. If we recycle things, we can save money, energy and natural resources. Recycling the Sunday New York Times newspaper, for example, will save 75,000 trees every week.

A lot of the rubbish that we throw away is not biodegradable. Plastic, metals and chemicals will not disappear for hundreds of years. We also produce a lot of unnecessary things, such as plastic packaging. It pollutes the air, the land and the water. Pollution will be a very big problem in the future. We should not use non-biodegradable material. We must also reduce a lot of unnecessary things that we produce and use.

Many natural resources are not renewable. Coal, gas, oil, metals and minarals, for example, will come to the end one day. We have to reduce the amount of resources and energy.

Plastic, metals and chemicals will not disappear for ___________ .

hundreds of years

ten years

two years