Q: What gas do the lungs give up as they take in oxygen? A:

OPTIONS:
- carbon monoxide
- methane
- nitrogen
- carbon dioxide

Answer: carbon dioxide

Problem: OPTIONS:
- intense
- different
- inactive
- active
Q: Q: Is sleep an active or inactive state in the brain? A:
Answer: active

Problem:OPTIONS:
- pollen
- testes
- uterus
- ovary

Q: Each month, starting in puberty, one egg matures and is released from where? A:
****
A: ovary

Q: Food is broken into smaller particles by mastication, a process involving action by what structures? A:
OPTIONS:
- cilia
- proteins
- tonsils
- teeth
teeth

Q: Groups of related organs form what? A:
OPTIONS:
- community systems
- maturation systems
- artificial systems
- organ systems

Answer: organ systems

input with options: Q: What do you call a science that aims to find solutions to practical problems? A:
OPTIONS:
- applied experience
- experimental science
- evolved science
- applied science
output:
applied science