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.

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.

All of the disasters resulted from_______ will continue to have a devastating effect on socio-economic development.

floods

climate change

ecological balance

footprint

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

Pollution can have disastrous effects on the delicately balanced ecosystem.

catastrophic

infectious

unimportant

minor

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 best answer.

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

getting

making

leading

contributing

Choose the best answer.

A strong greenhouse effect will warm the oceans and partially melt glaciers, increasing ______.

temperature

water

sea level

pollution

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

The low _______ in the Mekong Delta leads to acute saline intrusion much deeper than the traditional 30 to 40km of mainland that is contaminated with saltwater.

water currents

sea level

water level      

salt water