Q: Planes fly in what layer of the atmosphere because there is less friction and turbulence? Choices: - mesosphere - ozone layer - crust - stratosphere A:
stratosphere

Q: What substances contained in lemons, vinegar, and sour candies have a sour taste? Choices: - proteins - fats - lactose - acids A:
acids

Q: Q: What happens when development of nervous system is disturbed? Choices: - vascular disorders - muscular disorders - neurochemical disorders - neurodevelopmental disorders A:
A: neurodevelopmental disorders

Question: Q: What type of power is generated using a nonrenewable resource? Choices: - wind power - solar power - water power - nuclear power A:
Answer: nuclear power

*Question*
Q: Renal plasma flow equals the blood flow per minute times the what? Choices: - erythrocytes - leukocytes - hemoglobin - hematocrit A:
**Answer**
hematocrit

*Question*
Q: What is the most abundant element in the universe? Choices: - carbon - helium - nitrogen - hydrogen A:
**Answer**
hydrogen