Test: ACT English Test

1.

One of the most influential niche constructors is the earthworm, an organism found almost everywhere on the planet.  A scientist only concerned with evolution would predict that, in order to live on land, earthworms would have to significantly change. Earthworms didn’t change their physiology a great amount, however; instead, they changed the soil to make it more like the ocean in order to survive. Land with earthworms is less compacted, is more nutrient-rich, and 1 better mixed than land without them –  leading to monumental changes in the ecosystem.

is mixing better

NO CHANGE

is better mixed

mixes better

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