Q: Fact 1: Many corals secrete an exoskeleton that builds up to become a coral reef. Fact 2: Coral reefs are made up of the accumulated exoskeletons of the coral polyp. Given the two facts above, what do coral polyps form? | OPTIONS:
- lagoon
- graptolites
- a cuticle
- barnacles
- bioaerosols
- cave
- coral reef
- salt and water.
A: coral reef

Q: Fact 1: Eyes are used for seeing by animals by sensing light. Fact 2: Infrared light is invisible to the eye. Given the two facts above, what light can animals not see? | OPTIONS:
- Sand dollars
- electricity
- motion
- sun's heat
- photons
- our star
- heat
- infrared
A: infrared

Q: Fact 1: Birds evolved from a group of bipedal dinosaurs called theropods. Fact 2: Dromaeosaurs are part of the theropod group of dinosaurs. Given the two facts above, what did birds evolve from? | OPTIONS:
- chickens
- insects
- fur and fat
- dromaeosaurs
- beaks
- feathers
- animals
- warm-blooded
A: dromaeosaurs

Q: Fact 1: Cells are the basic units of the structure and function of living things. Fact 2: An organism is a living thing. Given the two facts above, what are cells the basic units of the structure and function of? | OPTIONS:
- humans
- Most plants
- animals
- Cell service
- Organisms
- mammals
- Lego cells
- Buildings
A: Organisms