Elevated carbon dioxide levels may mitigate losses of biodiversity from nitrogen pollution. ... Rising levels of carbon dioxide may overheat the planet and cause other environmental problems, but fears that rising carbon dioxide levels could directly reduce plant biodiversity can be allayed, according to a new study.
Answer: cell —> tissue —> organ —> organ system
aka. D
Answer: mimicry, camouflage, poison, reduction in size and stature, and changing habitats.
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