Ques:Q: Respiration cycles the organic carbon into which gas? Choices: - liquid dioxide - phosphorus dioxide - oxygen - carbon dioxide A:

Ans:carbon dioxide
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Ques:Q: What are the major types anchoring proteins? Choices: - semimetals and occludins - amino and fatty acids - claudins and semimetals - claudins and occludins A:

Ans:claudins and occludins
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Ques:Q: How many chambers does an amphibian heart have? Choices: - four - two - one - three A:

Ans:three
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Ques:Q: Emissions of what gas into the atmosphere from fossil fuel burning have been rising for the past several decades? Choices: - sulphur - oxygen - neon - carbon dioxide A:

Ans:
carbon dioxide
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