Q: What elements do mafic minerals typically include? A:
OPTIONS:
- iodine and magnesium
- sodium and magnesium
- xerophyte and magnesium
- iron and magnesium

Answer: iron and magnesium

Question: Q: Scientists measure the gases that escape from a volcano to predict what? A:
OPTIONS:
- storms
- floods
- snowfall
- eruptions
Answer: eruptions

input with options: Q: What is making measurements that are close to the true value known as? A:
OPTIONS:
- estimation
- frequency
- prediction
- accuracy
output: accuracy

Q: Q: What is a primary source of the hormone melatonin? A:

OPTIONS:
- thymus
- pituitary gland
- thyroid gland
- pineal gland

A: pineal gland

input: OPTIONS:
- respiration
- digestion
- nothing
- body movements Now, answer this question: Q: What occurs at joints? A:
A:
output: body movements

Question: Q: "red-shift" refers to a shift toward red in the spectrum from what celestial bodies? A:
OPTIONS:
- galaxies
- planets
- comets
- stars
Answer:
stars