Q: Q: Fossil fuel consumption is a major contributor to global emissions of what gas? Choices: - oxygen - carbon monoxide - methane - carbon dioxide A:
A: carbon dioxide

Q: Q: What does the second number in a blood pressure reading measure? Choices: - external pressure - optimal pressure - epithelial pressure - diastolic pressure A:
A: diastolic pressure

Q: Q: What are the structural and functional units of the nervous system, which transmit nerve impulses to other cells? Choices: - axions - ions - electrons - neurons A:
A: neurons

Q: Q: Colloids are used industrially as what? Choices: - organisms - impurities - solutions - catalysts A:
A: catalysts