The slow increase in the temperature of the Earth caused partly by the greenhouse effect increasing the amount of carbon dioxide in the atmosphere
global warming
20
What kind of energy does a wind turbine produce?
renewable energy
15
What illegal activity does this picture show?
Logging
15
Using low-energy light bulbs we can .................. energy.
save
15
Tigers belong to ................. species. There are only about 3000 of them in the whole world.
endengered
20
What does this picture show?
A tribe
15
Buses, trams and trains belong to ................ transport.
public
15
Air ...................... is a huge problem in many cities. Sometimes it is hard to breathe there.
pollution
15
What do Warsaw, Oslo, Berlin and London have in common?
They are capital cities.
15
The situation when there are too many people in the world.
Overpopulation
15
What does the picture show?
recycling bins
15
Name three renewable sources of energy.
Solar energy, wind energy, and hydropower.
15
What does the term "biodiversity" mean?
Explanation: Biodiversity refers to the variety of life in a particular habitat or ecosystem.
15
What are fossil fuels, and why are they considered non-renewable?
Fossil fuels, such as coal, oil, and natural gas, are energy sources formed from ancient plant and animal matter. They are considered non-renewable because they