Question: Q: Distance traveled divided by time yields what measurement, which is another word used to describe the speed of a chemical reaction? Choices: - flow - displacement - acceleration - rate A:
Answer: rate

Question: Q: Prokaryotes and the nitrogen cycle nitrogen is a very important element for life because it is part of proteins and this? Choices: - nuclear forces - nerve cells - molecules - nucleic acids A:
Answer: nucleic acids

Question: Q: What is the most common cause of lung cancer? Choices: - coal smoke exposure - restaurant smoke exposure - tree smoke exposure - tobacco smoke exposure A:
Answer:
tobacco smoke exposure