The ice giants are mostly made of 'volatile' substances such as?
Correct answer: D. Water, ammonia and methane
- A. Water, mercury and methane
- B. Water, ammonia and mercury
- C. Water, plasma and methane
- D. Water, ammonia and methane
Explanation
The principal volatile materials in the ice giants are water, ammonia and methane. Mercury is a metal, while plasma is an ionised state of matter rather than a characteristic planetary volatile.
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