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What do ocean mollusks use to absorb oxygen from the water?

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What do obligate aerobes need to live?

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What do nonvascular plants reproduce with?

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What do neutral atoms have the same number of?

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What do neurons pass to the next neuron?

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What do nearly all animals have in common with regards to digestion?

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What do muscles need to contract?

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What do most species of monkeys have that no apes or humans do?

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What do most organisms eat in the profundal zone of a lake?

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What do most ecosystems get energy from?

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What do most amphibians breathe with as larvae?

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What do monotremes have instead of a uterus and vagina?

asked Jan 6 in Science by QuincyEarley (490 points)

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What do monarch butterfly larvae depend on for their food?

asked Jan 6 in Science by MattieLundie (890 points)

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What do molecules need to do for a reaction to take place?

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What do mitochondrions have an inner and outer version of?

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What do microbes use to make food?

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What do metals typically lose to achieve stability?

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What do marine autotrophs acquire in carbonic acid, its dissolved form?

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What do many scientists think are the oldest eukaryotes?

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What do mammals conserve heat with?

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