What does Rachel Carson mean when she says only the most hardy and adaptable can survive in a place so mutable?

Answer 1

This is a line taken from Rachel Carson's The Marginal World . Here she talks about 'edge of the sea', which is actually the intertidal region which she says now belongs to land, now to the sea. The area is also called littoral zone .

The area is submerged in water during high tide but exposed during low tide. This is why she says its so mutable: waves are breaking, periodic flooding occurs, and when exposed, there's exposure to sun, rain, wind and temperature changes akin to land.

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Answer 2

Hannah Amos

Rachel Carson likely means that in environments that are constantly changing or unpredictable, only organisms that are resilient and capable of adapting quickly can thrive and survive.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.