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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. Despite the wealth of information campaigns telling people about global warming and its causes, most people have (23) _______to realize how severe the problem is. Coming climate changes could alter as much as one third of plant and animal habitats by the end of the 22nd century. These changes could in (24) ____ cause widespread extinctions among plant and animal species around the globe. Coastal and island habitats are perhaps in the greatest danger (25) _______ they face the combined threats of warming oceans and rising sea levels. As habitats change, many animals will come under intense pressure to find more suitable homes for themselves. Mass (26) ____ of at least some animals are certainly to be expected, but the fact remains that many animals will simply not be able to move fast enough. Such dire predictions may sound alarmist, but they are based on the rather moderate estimate that the amount of carbon dioxide in the atmosphere will double by 2100. Many scientists believe, however, that this figure is actually very conservative, and they claim that a tripling is far more realistic. If they are (27) ____, the effects on nature will be even more dramatic. (Source: https://www.nytimes.com/interactive/2017/climate)

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Read the following passage and mark the letter A, B, C, or D to choose the word or phrase that best fits each of the numbered blanks from 25 to 29   THE LUNGS OF THE WORLD      It was once thought that forests and the wood that could be taken from them were in endless supply.  Especially in areas like South America, where vast areas of the continent were covered by rainforests, logging and clearing of forests for farming seemed like a harmless endeavor. (25) _____________ the clearing of rainforests been kept in moderation, it may have become a stable source of wood and a(n) (26) _____________ for the people in the region. It was not, though, and the amount of damage that has been (27) _____________ to the entire planet has been terrible because of the clearing of rainforests.  The rainforests are considered the lungs of the world because they breathe in carbon dioxide and breathe out oxygen. We need the oxygen to survive, and the more we clear rainforests, the more carbon dioxide begins to concentrate in the atmosphere. In addition to the clearing of forests, the burning of fossil fuels for energy (28) _____________ more carbon dioxide to the atmosphere. It makes the problems of global warming get worse, as we keep adding more carbon dioxide while simultaneously taking away the planet's (29) _____________ to deal with this gas.

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