Question: Q: Copper oxide is a result of what two substances mixing? Choices: - copper and gas - metal and oxygen - crystal and oxygen - copper and oxygen A:
Answer: copper and oxygen

Question: Q: What system transports minerals and water in a plant? Choices: - leaves - stamen - flowers - roots A:
Answer: roots

Question: Q: What elements do lipids primarily consist of? Choices: - silicon, hydrogen , and oxygen - iron, hydrogen , and oxygen - helium, hydrogen , and oxygen - carbon, hydrogen, and oxygen A:
Answer:
carbon, hydrogen, and oxygen