input with options: Q: The presence of what makes soil hold together more tightly and enables it to hold more water? A:
OPTIONS:
- sand
- salt
- glass
- clay
output: clay

Q: Q: What type of shape does sodium chloride have? A:

OPTIONS:
- round
- trianguler
- oblong
- cubic

A: cubic

input: OPTIONS:
- mature
- immature
- stable
- unstable Now, answer this question: Q: Radioisotopes may vary greatly in their rate of decay, decaying faster if their nuclei are more what? A:
A:
output: unstable

Q: How is the radioactive decay measured? A:

OPTIONS:
- carbon dating
- quarter-life
- alpha emission
- half-life

Answer: half-life

Problem: OPTIONS:
- terrible interference
- primitive interference
- molecular interference
- destructive interference
Q: Q: What occurs when two waves combine and cancel each other out? A:
Answer: destructive interference

Q: Precipitation maps show the amount of what in different areas? A:

OPTIONS:
- population
- heat
- geographical variety
- rainfall

Answer:
rainfall