Choose A, B, C, or D that best completes each sentence.

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

effects

emissions

gases

layers

Choose the best answer.

Ocean water also will expand if it warms, _______further to sea level rise.

getting

making

leading

contributing

Choose the best answer.

Greenpeace works to promote public                of the dangers that threaten our planet today.

information

awareness

knowledge

idea

Choose A, B, C, or D that best completes each sentence.

A layer of greenhouse gases - primarily water vapor, and carbon dioxide - acts as a _______  blanket for the Earth, absorbing heat and warming the surface.

thermal

hot

heat

heating

Choose the best answer.

In cold climates, houses need to have walls that will                  heat.

remove

get

take

absorb

Choose the best answer.

Over $100 million was allocated for the ______ of hazardous chemicals and radioactive waste.

break-up

tidy-up

clear-up

clean-up

Choose A, B, C, or D that best completes each sentence.

Viet Nam has been named among the 12 countries most _______ for climate change by the World Bank.

at risk

at danger

in risk

ready

Choose the word or phrase that is CLOSEST in meaning to the underlined part in the following questions.

Coming on top of the previous years of extreme scarcity of food, however, the longer term economic implications were profound.

drought

famine

flood

earthquake