Problem: OPTIONS:
- pulley
- hammer
- blade
- lever
Q: Q: What simple machine works with a wheel and axle in a wheelbarrow? A:
Answer: lever

Problem:OPTIONS:
- five
- one
- three
- four

Q: How many variables are used to describe the condition of a gas? A:
****
A: four

Q: What are bacteria that stain purple are called? A:
OPTIONS:
- gram-neutral bacteria
- gram-negative bacteria
- complex bacteria
- gram-positive bacteria
gram-positive bacteria

Q: What organ do we use to hear sound? A:
OPTIONS:
- eye
- antennae
- amplifier
- the ear

Answer: the ear

Question: Q: What type of joint is the knee joint? A:
OPTIONS:
- ball joint
- pivot joint
- condyloid joint
- hinge joint
Answer: hinge joint

input: OPTIONS:
- oxygen
- fresh water
- algae
- seawater Now, answer this question: Q: A salt concentration of 32 percent is nearly ten times that of what abundant resource? A:
A:
output:
seawater