input: OPTIONS:
- swimmers
- cycle - feeders
- flagellators
- filter-feeders Now, answer this question: Q: Protists which use their tails to eat are called what? A:
A:
output: filter-feeders

Q: The atomic number defines the identity of what? A:

OPTIONS:
- atomic reaction
- neutralized molecule
- periodic table
- element

Answer: element

Problem: OPTIONS:
- rivers
- ocean
- moon
- sun
Q: Q: What celestial body is the earth's main source of energy? A:
Answer: sun

Problem:OPTIONS:
- mold
- ferns
- viruses
- bacteria

Q: What were the first life forms found on earth similar to? A:
****
A: bacteria

Q: Ion drives have low thrust but high what? A:
OPTIONS:
- power
- acceleration
- tolerance
- efficiency
efficiency

Q: Knees and elbows are examples of what part of the skeletal system? A:
OPTIONS:
- cartilage
- muscles
- nerves
- joints

Answer:
joints