CFS B 1 2016

The Greenhouse Effect

A greenhouse is a house made of glass. The sun shines right through the glass and makes it warm inside the greenhouse. It is possible to grow flowers and vegetables inside a greenhouse in the winter. Scientists have a theory that a lot of carbon dioxide in the atmosphere will act like the glass in a greenhouse. As the sun shines through the carbon dioxide blanket, the atmosphere will get hotter and hotter.

Carbon dioxide is produced by combustion, the burning of fuel. It is being added to the normal atmosphere as we have more and more cars, more and more houses and industries. In short, more people produce more carbon dioxide.

Scientists predict that as a result of more carbon dioxide in the atmosphere, there will be a global warming, or a long-term rise in temperatures over the earth.

(Adapted from “Time and Space”)

According to the text, we can infer that:

Carbon dioxide is only produced by industries and by cars.
Scientists believe that the rise in temperatures over the earth is the main cause of a global warming.
As the amount of carbon dioxide in the atmosphere increases, the temperature over the earth will rise.
Global warming is the phenomenon in which the atmosphere temperature is hotter than the earth’s surface.