Part 1. Definition
You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
Part 2. Example
Paragraph: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
 Question: John's town used to have lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is 
 Choices: A)scarce 
B)plentiful
Answer: scarce
Explanation: Based on the information given in the paragraph, population growth will make water more scarce, so that is the correct answer.
Part 3. Exercise
Paragraph: If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.
 Question: If greenhouse gases in the atmosphere were to be doubled, Earth will become 
 Choices: A)cooler 
B)warmer
Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
warmer