Fact 1: Ice wedging is when ice causes rocks to crack by expanding in openings. Fact 2: Water expands as it freezes into ice. Given the two facts above, answer the question "How does water crack rocks?" with the following options: - Turning to silt - bottom of feet - Turning to ice - Getting hot - erosion - Mixing with salt - lowered energy cost - Movement
Turning to ice

Fact 1: Arainbow is formed by refraction of light by separating light into all different colors. Fact 2: After the storm, a rainbow appears. Given the two facts above, answer the question "After a storm refraction of light occurs where the light is split into all different what" with the following options: - directions - patterns - Joules - similar - photons - an object - destinations - colors
colors

Q: Fact 1: Some viruses can cause cancer. Fact 2: Skin cancer can kill. Given the two facts above, answer the question "Some viruses can what?" with the following options: - fret - harm - damage - grow - expand - discover - visit - kill
A: kill

Question: Fact 1: Muscles can only contract. Fact 2: Smooth muscles are involuntary muscles. Given the two facts above, answer the question "Something that can be described as what can only contract?" with the following options: - Smooth - the skin - Rough - strong - Sweet - Loud - complex - alveoli
Answer: Smooth

*Question*
Fact 1: Mating is generally preceded by courtship. Fact 2: For example, a black rooster and a white hen mate, and the resulting offspring are gray. Given the two facts above, answer the question "What can result in offspring?" with the following options: - seeds - competition - courtship - travel - resistance - solitude - litter - reading
**Answer**
courtship

(Question)
Fact 1: Most mollusks have shells. Fact 2: Mussels are bivalve mollusks. Given the two facts above, answer the question "Mussels have what?" with the following options: - seaweed - arms - Energy - a shell - warmth - bacteria - Length - legs
(Answer)
a shell