Name a layer of Earth's atmosphere: rare answers

There are 8 correct answers to “Name a layer of Earth's atmosphere” on our list. The obvious ones, like Stratosphere and Troposphere, are worth 10 points each; the rare ones, like Exosphere, are worth far more.

Play unlimited Krillion dives to test yourself on this prompt and others like it.

The rarest answers

This list has no Abyssal tier, so the Midnight Zone is as deep as it goes: Exosphere, worth 85 points each.

Rarity tiers are our own estimate of how few people would think of each answer. For strategy, read how to find One in a Krillion answers.

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• Think past the first answer

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