#RFB-11000804Reading: Fill in the BlanksAcademic,CoreMedium
Air on Mars
Official Question Material
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The rover analyses the air on Mars, and it found that the air contained another of the most basic organic molecules and a key [blank] of natural gas: methane. One of the characteristics of methane is that it only [blank] a few hundred years. This means that something, somewhere on Mars, is replenishing the supply. According to NASA, Mars [blank] thousands of tons of methane at a time.
Sample Answer & Audio Transcript
The rover analyses the air on Mars, and it found that the air contained another of the most basic organic molecules and a key ingredient of natural gas: methane. One of the characteristics of methane is that it only survives a few hundred years. This means that something, somewhere on Mars, is replenishing the supply. According to NASA, Mars emits thousands of tons of methane at a time.
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