Problem: OPTIONS:
- extremities
- lung
- brain
- heart
Q: Answer the following question given this paragraph: Veins are blood vessels that carry blood toward the heart. This blood is no longer under much pressure, so many veins have valves that prevent backflow of blood. Veins generally carry deoxygenated blood. The largest vein is the inferior vena cava, which carries blood from the lower body to the heart. Q: Veins are blood vessels that carry blood toward what? A:
Answer: heart
Problem: OPTIONS:
- hydrogen
- metals
- oxidation
- carbon compounds
Q: Answer the following question given this paragraph: Organic chemistry is the study of the chemistry of carbon compounds. Q: Organic chemistry is the study of the chemistry of what? A:
Answer: carbon compounds
Problem: OPTIONS:
- Pulling
- power
- push
- pressure
Q: Answer the following question given this paragraph: During metamorphism a rock may change chemically. Ions move and new minerals form. The new minerals are more stable in the new environment. Extreme pressure may lead to physical changes like foliation . Foliation forms as the rocks are squeezed. If pressure is exerted from one direction, the rock forms layers. This is foliation. If pressure is exerted from all directions, the rock usually does not show foliation. Q: Foliation, which forms layers in rocks during metamorphism, is caused by what? A:
Answer:
pressure