Answer the following question given this paragraph: A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point. When force is applied to the inner axle, the ideal mechanical advantage is less than 1. When force is applied to the outer wheel, the ideal mechanical advantage is greater than 1. Q: What simple machine consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point? A:
OPTIONS:
- pully
- bloom and axle
- spoke
- wheel and axle

Answer: wheel and axle

Answer the following question given this paragraph: Weather occurs because of unequal heating of the atmosphere. The source of heat is the Sun. The general principles behind weather can be stated simply:. Q: What does unequal heating of the atmosphere cause? A:
OPTIONS:
- water
- flares
- humidity
- weather

Answer: weather

Answer the following question given this paragraph: Q: In drosophila, gradients of morphogens encoded by maternal effect genes determine what? A:
OPTIONS:
- cell mass
- cells axes
- body mass
- body axes

Answer:
body axes