Problem:OPTIONS:
- high salt content
- moving water
- animal species
- low salt concentration

Q: What are fresh water biomes defined by? A:
****
A: low salt concentration

Q: What is the time interval required for one complete wave to pass a point called? A:
OPTIONS:
- cycle
- minute
- half-life
- period
period

Q: What are the most numerous organisms in the world? A:
OPTIONS:
- reptiles
- jellyfish
- primates
- insects

Answer: insects

Question: Q: What serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body? A:
OPTIONS:
- cells immune system
- super immune system
- immense immune system
- innate immune system
Answer: innate immune system

input with options: Q: Much of the iron produced is refined and converted into what? A:
OPTIONS:
- plastic
- wood
- sugar
- steel
output: steel

Problem: OPTIONS:
- environmental science
- Chemistry
- Thermodynamics
- physical science
Q: Q: What branch of science is the study of matter and energy? A:
Answer:
physical science