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Read the passage carefully and answer the following questions Ecosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, pollination, climate regulation, spiritual fulfillment and aesthetic enjoyment, to name just a few. Most of these benefits either are irreplaceable or the technology necessary to replace them is prohibitively expensive. For example, potable fresh water can be provided by desalinating sea-water, but only…
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In the following passage there are blanks, each of which has been numbered. For each number, five words are suggested one of which fits the blank appropriately. Find out the appropriate word in each case. Greenhouse gases are only (1) of the story when it comes to global warning. Changes to one part of climate system can (2) additional changes to the way the planet absorbs or reflects energy. These secondary changes are (3) climate feedbacks…
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