Номер D, страница 71 - гдз по английскому языку 10 класс учебник Комарова, Ларионова

6. What in the world ...!. Reading - номер D, страница 71.

Условие.

D Quickly read the answers and match them to the readers' questions.

A

Not usually, but it can be. A good example is Easter Island in the South Pacific Ocean. The population of this tiny island increased so much that the ecosystem of the island could not supply enough food and water for the people living on it.

Resources began to disappear and the forests were destroyed because the people cut down trees for farming. This led to an ecological disaster!

Then, because the people had little to eat and drink, they started fighting over food and water. We depend on our environment for food, clean water, clean air, shelter and warmth. If there are too many people in one place, they may not be able to have all of these things.

B

One degree may seem very little. But it is creating big changes around the world. One obvious change is the rise in sea levels, which is causing some coastal areas to flood and sometimes even disappear! For instance the Maldives, which are a group of islands in the Indian Ocean, are at most only one metre above sea level.

Scientists predict that in less than 50 years' time they will have disappeared if we don't do something to slow down global warming.

Also, many animals in the world are going to die out because of the changes happening to the places where they live, their habitats. For instance, penguins in Antarctica and polar bears in the Arctic are already being affected by the melting of the icebergs.

C

We can, but the process of removing salt from sea water to make fresh water is very expensive, and it uses up a lot of energy! That's why most countries don't do it.

It's much cheaper to get fresh water from rivers or lakes to drink or cook with. On the other hand, there are things that we can do in our day-to-day lives that can save water. For instance, we can take shorter showers and we can make sure we don't let the water run when we're brushing our teeth or doing the washing-up.

By doing little things like that, we will be doing a lot to help save water.

D

What do you know about the Big Bang*? It's one of the greatest mysteries of the universe! Did it happen? How?

What happened next? Most scientists believe it did happen and they hope that the CERN experiments will provide answers to these questions.

In the main experiment, two particles travelling at close to the speed of light will crash into each other and recreate the exact environment of billions of years ago, a split second after the Big Bang.

* The Big Bang theory says there was an explosion that resulted in the beginning of the universe.

Решение.