Q: Particles of different densities exert different amounts of what? A:

OPTIONS:
- resistance
- force
- energy
- pressure

Answer: pressure

Problem: OPTIONS:
- sense danger
- produce food
- fight infection
- digest food
Q: Q: What was the appendix used for in the past but is no longer needed for? A:
Answer: digest food

Problem:OPTIONS:
- twins
- identical
- guppies
- live

Q: What type of young do scorpions produce? A:
****
A: live

Q: Thermal, radiant, electrical, nuclear, and chemical are all types of what? A:
OPTIONS:
- fuel
- fuel
- heating
- energy
energy

Q: What term that shows how fast a population is growing includes new members added to the population over a given period, as well as old members removed from the population? A:
OPTIONS:
- birth rate
- population density
- emigration
- growth rate

Answer: growth rate

input with options: Q: Solar cells turn sunlight directly into what? A:
OPTIONS:
- gas
- water
- cold
- electricity
output:
electricity