Why Did Invertebrates, Particularly Arthropods, Get So Large in the Late

question 22

Multiple Choice

Why did invertebrates, particularly arthropods, get so large in the Late Paleozoic?

• A)There was more moisture in the atmosphere.
• B)Ozone in the atmosphere shielded them from ultraviolet radiation.
• C)There was more vegetation for them to feed on.
• D)There was more oxygen in the atmosphere.

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