Question: Q: In a chemical reaction, the amounts of reactants and products will be constant when what state is attained? A:
OPTIONS:
- saturation
- peak
- homogeneity
- equilibrium
Answer: equilibrium

input with options: Q: Why are continents unable to be pushed down into the mantle by plate boundaries? A:
OPTIONS:
- gravity
- surface tension
- density
- buoyancy
output: buoyancy

Q: Q: What helps represent age-sex structure of the population? A:

OPTIONS:
- habitat chart
- density graph
- biome model
- population pyramid

A: population pyramid

input: OPTIONS:
- plutonium accelerators
- nitrogen accelerators
- nuclear reactors
- particle accelerators Now, answer this question: Q: How can nuclear fusion in stars be simulated? A:
A:
output: particle accelerators

Q: In science, what do you call something that always applies under the same conditions? A:

OPTIONS:
- theory
- hypothesis
- scientific method
- scientific law

Answer: scientific law

Q: Q: What types of orbits do comets usually have? A:

OPTIONS:
- vertical
- convex
- spectral
- elliptical

A:
elliptical