Q: Q: The abundance of this substance in the atmosphere is what most scientist agree that is causing global warming? Choices: - argon - iron oxide - liquid dioxide - carbon dioxide A:
A: carbon dioxide

Q: Q: The major fuel for the brain is which carbohydrate? Choices: - glutamate - sucrose - insulin - glucose A:
A: glucose

Q: Q: What powerful microscopes use a beam of subatomic particles instead of a beam of light? Choices: - complex microscopes - scientific microscopes - nuclear microscopes - electron microscopes A:
A: electron microscopes

Q: Q: The rate of the accumulation of neutral what serves as a type of population-based biological clock? Choices: - prokaryotic - enzymes - eukaryotes - polymorphisms A:
A: polymorphisms