Problem:OPTIONS:
- stable half-life
- unstable end-product
- radioactive cascade
- stable end-product

Q: What is required for a decay chain to end? A:
****
A: stable end-product

Q: What term means that only molecules or ions of a certain size, shape, polarity or charge are capable of passing through the material? A:
OPTIONS:
- classic permeation
- induced permeation
- radiation permeation
- selective permeation
selective permeation

Q: What is the smallest contractile portion of a muscle? A:
OPTIONS:
- filaments
- cell
- capillary
- sarcomere

Answer: sarcomere

Question: Q: The water in some springs are hot because they're heated by what? A:
OPTIONS:
- gravity
- the sun
- fires
- hot magma
Answer: hot magma

input with options: Q: Who first proposed that earth is a magnet? A:
OPTIONS:
- Albert Einstein
- Isaac Newton
- Marconi
- william gilbert
output: william gilbert

Problem: OPTIONS:
- deposit feeder
- bottom feeder
- silt feeders
- suspension feeders
Q: Q: What type of feeders are sea lilies and feather stars? A:
Answer:
suspension feeders