TEST FOR UNIT 5

______________ is the increase in the temperature on Earth.

• Greenhouse effect

• Global warming

• Climate change

• Ecological balance

Certain ______in the atmosphere such as carbon dioxide, methane and nitrous oxide, block heat from escaping.

• effects

• emission

• gases

• layers

Greenhouse gas __________ from factories and vehicles can result in global warming.

• emit

• emissions

• effects

• causes

After we read the report on how the burning of petrol in cars _________ to climate change, we determined to reduce our carbon footprint.

• devote

• contribute

• result

• cause

A strong greenhouse effect will warm the oceans, melt glaciers and increase __________.

• temperature

• sea water

• sea level

• pollution

Computers have had a great impact _____ our lives since their appearance.

• on

• at

• for

• to

In the future, people will mainly use energy from _______ sources for transportation, such as the wind and the sun.

• fossil fuels

• nonrenewable

• renewable

• limited

______________include coal, oil and natural gas.

• Pollutants

• Renewable energy

• Fossil fuels

• Chemical fertilizers

Coal, gas and oil are ______________ forms of energy that cannot be replaced after used.

• unlimited

• renewable

• nonrenewable

• contaminated

As a student, I think I should study more and be more responsible for making contribution ______ preserving our environment better.

• on

• of

• from

• to