Q: Cnidarians have a simple digestive system with a single opening surrounded by what type of structures, which are used to capture prey? A:
OPTIONS:
- spines
- antennae
- claws
- tentacles
tentacles

Q: Like mammals and birds, and unlike other reptiles, crocodiles have how many chambers in their heart? A:
OPTIONS:
- one
- six
- two
- four

Answer: four

Question: Q: Oxygen, carbon, hydrogen and what other element make up approximately 96% of living matter? A:
OPTIONS:
- calcium
- helium
- silicon
- nitrogen
Answer: nitrogen

input with options: Q: Alterations that change chromosome structure are known as? A:
OPTIONS:
- lesions
- traits
- deformities
- mutations
output: mutations

Q: Q: There are how many visual clues to indicate a chemical reaction? A:

OPTIONS:
- three
- five
- seven
- four

A: four

Q: What are butterflies and bees an example of? A:
OPTIONS:
- spores
- species
- parasites
- pollinators
pollinators