Question: Fact 1: Contact between rocks over long periods of time causes rocks to smooth. Fact 2: Rocks are actually solid mineral deposits. Given the two facts above, contact between solid mineral deposits over long periods of what causes them to smooth?
OPTIONS:
- time
- vacuum
- widen
- cracks
- clocks
- years
- Bend
- instant
Answer: time

Question: Fact 1: Some viruses can cause cancer. Fact 2: Leukaemia and lymphoma are cancers of the blood. Given the two facts above, what can some viruses cause?
OPTIONS:
- extinction
- Allergies
- Dehydration
- anemia
- lymphoma
- relocation
- Pollution
- Toxicity
Answer: lymphoma

Question: Fact 1: Most amphibians breathe with gills as larvae and with lungs as adults. Fact 2: Salamanders are a type of amphibian. Given the two facts above, what breathes with gills as larvae and lungs as adults?
OPTIONS:
- salamanders
- animals
- respiration
- gastropod shells
- fish
- h2o
- insects
- it needs them
Answer:
salamanders