In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Q: Question: An _____ pulse rate is a sign of less oxygen to cells. 
 Answer: increased

A: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.
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Q: Question: Sarah is traveling, and notices that continents get larger when they are where in relation to the pole 
 Answer: closer

A: In a Mercator projection, because Greenland is closer to the pole, the continents shape and size are greatly increased.
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Q: Question: If Jim's country increases the amount of greenhouse gases that it emits, the acidity of the ocean's on the planet will 
 Answer: increase

A:
An increase in greenhouse gases will increase the changes that are already being seen including in ocean acidity.
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