The greenhouse effect is the problem caused by greenhouse gases which let too much sunlight escape into the atmosphere.
B.
The greenhouse effect describes the phenomenon that lets greenhouse gases like carbon dioxide in, but does not let them out.
C.
The greenhouse effect is the problem caused by increased quantities of gases such as carbon dioxide in the air. These gases trap the heat from the sun, and cause a gradual rise in the temperature of the Earth's atmosphere.
D.
The term 'greenhouse effect' is used to describe the warming of the globe. In particular, huge amounts of carbon dioxide are emitted, but an equal amount of oxygen cannot be produced.
2.
Climate change is mainly caused by...
A.
nature itself.
B.
scientists from another planet who want to destroy the Earth.
C.
the sun which is moving closer and closer to the Earth.
D.
humans and the man-made rise of greenhouse gases.
3.
Which of these increase the emission of the greenhouse gases?
A.
burning fossil fuels for energy & transport purposes (cars, planes, power stations, factories etc.)
B.
disposing non-recyclable waste
C.
renewable resources to produce energy
D.
deforestation
4.
What causes threats to biodiversity (numbers of different species of plants and animals)?
A.
overpopulation and the resulting destruction of ecosystems.
5.
What are possible effects of the climate change?
A.
Extinction of species and destruction of living spaces of animals.
B.
Global temperatures seem to rise by about 2° to 6°C by the year 2100.
C.
Stopping or reversion of the flow of the Gulf Stream, which supplies warm water to Europe, because of melting polar ice and its dilution in the ocean.
6.
What is meant by carbon footprint?
A.
The carbon footprint is a footprint we leave with our shoes.
B.
The carbon footprint describes our impact on the Earth's climate through our daily activities. The larger our footprint, the more we are contributing to the greenhouse effect and global warming.
C.
The carbon footprint is a concept developed by environmentalists. It helps us to realize how much carbon dioxide factories emit.
D.
The carbon footprint is shaped like a footprint and made of carbon monoxide. Through the carbon footprint, environmentalists want to check how much carbon sticks to our feet.
7.
What are possible solutions to reduce emissions of CO2 and other greenhouse gases?
A.
drink a lot of water.
B.
buy locally-grown food.
C.
breathe out less.
D.
plant trees.
E.
support renewable energy projects.
F.
buy clothes that are made of renewable resources (e.g. wood/ wool) or from materials that can be recycled.
