Q: What is the world's most serious resource problem? Choices: - gas shortage - citrus blight - deforestation - water scarcity A:
water scarcity

Q: What unit of measurement determines how far something travels in a given amount of time? Choices: - distance - volume - density - speed A:
speed

Q: Q: A single amino acid substitution in hemoglobin leads to what disease? Choices: - crohn's disease - AIDS - down's syndrome - sickle cell anemia A:
A: sickle cell anemia

Question: Q: What type of movements are produced when the angle between the bones of a joint changes? Choices: - microscopic - circular - oblong - angular A:
Answer: angular

*Question*
Q: At what age is skeletal maturity reached by humans? Choices: - 40 - 30 - 15 - 20 A:
**Answer**
20

(Q).
Q: What are the newest, outer layers of secondary xylem called? Choices: - bark - fibrous - vascular - sapwood A:
(A).
sapwood