Q: On top of the otolithic membrane is a layer of calcium carbonate crystals, called what? A:

OPTIONS:
- cones
- gonads
- calcites
- otoliths

Answer: otoliths

Problem: OPTIONS:
- simple
- peculiar
- various
- symbiotic
Q: Q: Commensalism, mutualism, and parasitism are known as what type of relationships? A:
Answer: symbiotic

Problem:OPTIONS:
- nitrogen
- hydrogen
- helium
- ammonia

Q: What is the colorless gas with a sharp, pungent odor used in smelling salts? A:
****
A: ammonia

Q: Scientists think the solar system formed from a big cloud of gas and dust called what? A:
OPTIONS:
- comet
- supernova
- Oort cloud
- nebula
nebula

Q: What are formed by atoms gaining electrons? A:
OPTIONS:
- ions
- cations
- oxides
- anions

Answer: anions

input with options: Q: The peripheral nervous system has major nerves that travel through every part of the body except which two places? A:
OPTIONS:
- muscles and brain
- lungs and spinal cord
- brain and heart
- brain and spinal cord
output:
brain and spinal cord