Look at the chart. Put the sentences below in the correct order.

Looking at the chart tell about consequences of greenhouse effect.

Answer the following questions.

1. What are the functions of atmosphere?

2. What gases absorb the radiation?

3. What happened to the energy absorbed by the atmospheric gases?

4. Why does the temperature rise on the Earth?

5. What can it result in?

6. What are the reasons of increasing the concentration of CO₂?

7. What other gases that can affect the heat balance of the earth can you name?

8. How do they appear in the environment?

9. What is the result of reaction N₂O with ozone?

10. What are the forecasts for the further increase in the atmospheric warming?

11. Put the sections of the article from the New Scientist into the correct order. The first section is “ a” and the last is “g”.

Looking on the Dark Side of Global Warming

A…The following chain of events takes a pessimistic view of what could be in store for a world that carries on as it does today, taking estimates from the agreed by the IPCC (Inter-Governmental Panel on Climate Change) scientists.

B. At the same time a “plankton multiplier effect” comes into effect as warmer weather makes the upper level of the oceans more stable. Phytoplankton grow more slowly, because they receive less nutrients, which come from deeper water that now reaches the surface layer more rarely.

C. But in this version of the future, the effect is worse. The depleted ozone layer above the Antarctic and Arctic transmits far more ultraviolet-B radiation to the surrounding seas. This weakens the phytoplankton, further depleting the ocean sink for carbon dioxide, which allows more of the gas to build up in the atmosphere.

D. The oceans, one of the two major carbon dioxide sinks, cannot absorb as much carbon dioxide as they once did. Many scientists believed that this happened suddenly at the end of the last ice age, boosting average temperatures in the North Atlantic by as much as 5 degrees C within a century.

E. The world warms at the accelerated rates predicted by the IPCC as concentrations of carbon dioxide and other greenhouse gases go on building up the atmosphere, without any cuts in emissions. As the oceans warm, they are less able to absorb carbon dioxide from the atmosphere.

F. This is a safe bet: the IPCC report warns of this positive feedback, which arises because carbon dioxide is less soluble in warmer water.

G. This is a major fear, now that ozone depletion has been found to extend into subarctic latitudes in the spring, when phytoplankton bloom …

Mascull B. Key Words in Science and Technology. The University of Birmingham, 1997.

Date: 2016-01-14; view: 1283