Problem: OPTIONS:
- unidirectional disc
- Back Disk
- subsidence disc
- intervertebral disc
Q: Q: What is a fibrocartilaginous pad that fills the gap between adjacent vertebral bodies? A:
Answer: intervertebral disc

Problem:OPTIONS:
- global warming
- rainforest destruction
- emigration
- diversion of water

Q: Why have rivers in arid regions been reduced to trickles? A:
****
A: diversion of water

Q: What completes the process as undigested material passes out of the digestive system? A:
OPTIONS:
- culmination
- reaction
- accumulation
- elimination
elimination

Q: What part of a person with myopia is longer than normal? A:
OPTIONS:
- arm
- leg
- neck
- eye

Answer: eye

Question: Q: What provides the identities of the reactants and products involved in the chemical change? A:
OPTIONS:
- electron shells
- genome sequence
- atomic numbers
- chemical formulas
Answer: chemical formulas

input: OPTIONS:
- lipids sheath
- nerve sheath
- layer sheath
- myelin sheath Now, answer this question: Q: What is the outer layer of an axon that acts like a layer of insulation, similar to the plastic that encases an electrical cord? A:
A:
output:
myelin sheath