Gas Over Martian Fissures Points to Possible Volcanism
Researchers regard gas escaping from below Alba Mons as a likely explanation, but the source remains uncertain.
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In this lesson: Separate the favoured explanation from confirmation of present-day volcanism.
Grammar in this story: A conditional conclusion
If confirmed, the interpretation would suggest
“If” introduces a condition on which another statement depends. Example: “If the test succeeds, the team will continue.” The condition is not stated as already satisfied.
Your turn
Distinguish the observed evidence from its proposed explanation and state what remains unobserved.
See one possible answer
The orbiter detected hydrogen chloride above fissures near Alba Mons. Researchers think seepage linked to magma is a likely explanation, but no present-day eruption or flowing lava has been observed.
Your answer can be different. Give a reason and use your own words.
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