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

Environmental groups want a substantial reduction in the emission of greenhouse gases.

release

import

export

charge

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

The law bans the import of ivory into the country.

prohibits

encourages

calls for

stimulates

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

Carbon dioxide is released through _______  processes such as respiration and volcano eruptions and through                        activities such as deforestation, land use changes, and burning fossil fuels.

human - natural

natural - human

man-made - ordinary

ordinary - man-made

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

Choose the best answer.

                is the gradual warming of the earth because of heat trapped by carbon dioxide and other gases in the atmosphere.

Atmosphere

Ecosystem

Greenhouse effect

Diversity