input: OPTIONS:
- digestive system
- nervous system
- tissues system
- skeletal system Now, answer this question: Q: Osteoporosis, osteoarthritis, fractures, and sprains are problems affecting what system? A:
A:
output: skeletal system

Q: What is pollution that enters water at just one point called? A:

OPTIONS:
- entry point pollution
- point supply pollution
- point supply pollution
- point source pollution

Answer: point source pollution

Problem: OPTIONS:
- the colon
- the urinary liver
- the small intestine
- the urinary bladder
Q: Q: What is a sac-like organ that stores urine? A:
Answer: the urinary bladder

Problem:OPTIONS:
- colors
- smells
- food
- diseases

Q: Bacteria are responsible for many types of what in humans? A:
****
A: diseases

Q: What word describes a carbonyl where the carbon atom makes single bonds with two others? A:
OPTIONS:
- acetone
- ions
- photons
- ketones
ketones

Q: What are most metal objects made of? A:
OPTIONS:
- tin
- aluminum
- bronze
- metal alloys

Answer:
metal alloys