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

Choose the best answer. Ocean water also will expand if it warms, _______further to sea level rise.

Choose the best answer. The clearing of land for agriculture, industry, and other human activities have increased ______ of greenhouse gases.

Choose the best answer. Conjunctivitis caused by the common cold is very and can spread rapidly between people.

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.

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.

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

Choose the best answer. In cold climates, houses need to have walls that will heat.

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

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.

Choose the word or phrase that is CLOSEST in meaning to the underlined part in the following questions. Some hold the view that an increase in interspecies competition leads to local extinctions and a decrease in diversity.

Choose the best answer. The destruction of the rain forests is an disaster.

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.

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

Choose the word or phrase that is CLOSEST in meaning to the underlined part in the following questions. Coal-fired power stations must be retrofitted to capture carbon dioxide.

Choose A, B, C, or D that best completes each sentence. Sea level rise is usually regarded as Viet Nam’s main _______: a one-meter rise would submerge 40 percent of the country and make millions homeless.

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.

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.

Choose A, B, C, or D that best completes each sentence. Methane is a far more active _______ than carbon dioxide, but also one which is much less abundant in the atmosphere.

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.

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.

Choose A, B, C, or D that best completes each sentence. Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse _______.

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.

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.

Choose A, B, C, or D that best completes each sentence. The next dry season will be extremely severe _______ further saltwater intrusion, water and rain shortages, and heat waves.

Choose the correct option to complete the sentence below. Waiting for the doctor,_______.

Choose the correct option to complete the sentence below. ______ in the jungle, George had to find the way out on his own.

Choose the correct option to complete the sentence below. Being an ex-convict, _______.

Choose the correct option to complete the sentence below. ___________, our pottery will last for generations.

Choose the correct option to complete the sentence below. ________ in Denmark, he could speak Danish perfectly well.

Choose the correct option to complete the sentence below. _______ by their optimism, he invested a lot in the company.

Choose the correct option to complete the sentence below. ______ the daughter of a bookshop owner, spent most of her childhood surrounded by books.

Choose the correct option to complete the sentence below. _______ at the right temperature, the cardigan will never shrink.

Choose the correct option to complete the sentence below. ___________ for so long, he had lost all hope.

Choose the correct option to complete the sentence below. ________, the teacher gave him the highest score.