Q: Fact 1: Smoking causes direct damage to the lungs. Fact 2: When lung damage is experienced, frequently the total capacity of the respiratory system is reduced. Given the two facts above, what can reduce respiratory system capacity? | OPTIONS:
- Breathing
- Smoking
- influenza
- bacteria
- Pollution
- Exercising
- Pesticides
- Singing
A: Smoking

Q: Fact 1: Hearing is used for sensing sound by animals. Fact 2: Humans are animals too. Given the two facts above, what uses hearing to sense sound? | OPTIONS:
- plants
- radio waves
- bears
- humans
- oak trees
- Bats
- Lobsters
- omnivores
A: humans

Q: Fact 1: Fertilization occurs when a sperm and an egg fuse. Fact 2: Fertilization As far as fertilization, timing is critical. Given the two facts above, when is timing critical? | OPTIONS:
- for gravity
- Warm air moving into cold air
- earth's orbit
- when sperm and egg fuse
- flow of electrons
- earth's rotation
- Earth revolving around the sun
- movement of tectonic plates
A: when sperm and egg fuse

Q: Fact 1: Insects may live in large colonies and have complex social behaviors. Fact 2: All termites are social insects. Given the two facts above, what are social? | OPTIONS:
- mammals
- termites
- bees
- ducks
- humans
- animals
- fur seals
- elephants
A: termites