Q: A reference point is used in measurement to make what? A:

OPTIONS:
- deviation
- focal point
- regression
- estimation

Answer: estimation

Problem: OPTIONS:
- acidophobes
- acidic
- acid heads
- acidophiles
Q: Q: Organisms that "love" acids are known as what? A:
Answer: acidophiles

Problem:OPTIONS:
- a battery
- a wedge
- a lever
- a rope

Q: A pulley is a simple machine that consists of a grooved wheel and? A:
****
A: a rope

Q: Alpha and beta decay occur when a nucleus has too many protons or an unstable ratio of what? A:
OPTIONS:
- electrons to neutrons
- atoms to neutrons
- nucleus to neutrons
- protons to neutrons
protons to neutrons

Q: What are sudden and dramatic losses of biodiversity called? A:
OPTIONS:
- explosive extinction
- life extinction
- normal extinction
- mass extinction

Answer: mass extinction

input with options: Q: What is magnetism produced by electricity called? A:
OPTIONS:
- electrical attraction
- momentum
- excitation
- electromagnetism
output:
electromagnetism