Question: Q: What does hemoglobin in blood carry to the cells? A:
OPTIONS:
- methane
- carbon dioxide
- nitrogen
- oxygen
Answer: oxygen

input with options: Q: Push or pull acting on an object is also called? A:
OPTIONS:
- Gravity.
- space
- effort
- force
output: force

Q: Q: Catalysts can greatly increase the rates of chemical what? A:

OPTIONS:
- photosynthesis
- decay
- effects
- reactions

A: reactions

input: OPTIONS:
- circuits
- levers
- tools
- machines Now, answer this question: Q: In physics, what do you call devices that make work easier? A:
A:
output: machines

Q: What process moves food through the esophagus no matter which position the body is in? A:

OPTIONS:
- mastication
- proteolysis
- homeostasis
- peristalsis

Answer: peristalsis

Q: Q: What is the name for an underground layer of rock that is saturated with groundwater? A:

OPTIONS:
- gradient
- aqueous cavity
- artesian well
- aquifer

A:
aquifer