Question: Fact 1: Matter vibrating can cause sound. Fact 2: Energy strikes the molecule, causing it to vibrate more vigorously. Given the two facts above, what striking a molecule can cause sound?
OPTIONS:
- waves
- thoughts
- nerves
- voltage
- cells
- instincts
- energy
- photons
Answer: energy

Question: Fact 1: Fertilization occurs when sperm swim to an egg inside an archegonium. Fact 2: Archegonium secretes sucrose to attract the sperm. Given the two facts above, sucrose attracts sperm to the what for fertilization?
OPTIONS:
- egg
- ovum
- omelet
- nest
- male
- ova
- uterus
- pistil
Answer: egg

Question: Fact 1: Population density is the average number of individuals per unit of area or volume. Fact 2: Population densities affect the balance of the environment. Given the two facts above, the average number of individuals per unit of area affect the balance of .?
OPTIONS:
- gravity
- the environment
- energy
- Earth orbiting the Sun
- an organism's body
- objects that have mass
- competition
- power
Answer:
the environment