Problem:OPTIONS:
- proton
- electron
- photon
- nucleus

Q: What is the small, dense region at the center of the atom that consists of positive protons and neutral neutrons? A:
****
A: nucleus

Q: What organ system transports blood through the body and to and from the lungs? A:
OPTIONS:
- metabolism
- digestive
- nervous
- circulatory
circulatory

Q: Burning gas to run our cars is an example of how human activity is contributing to what global event? A:
OPTIONS:
- ozone change
- carbon change
- metamorphic change
- climate change

Answer: climate change

Question: Q: What is another word for thermal energy? A:
OPTIONS:
- solar
- humidity
- temperature
- heat
Answer: heat

input with options: Q: Geiger counters can be used to detect what, in general? A:
OPTIONS:
- seismic load
- convection
- evaporation
- radiation
output: radiation

Problem: OPTIONS:
- protons
- electrons
- newtons
- neutrons
Q: Q: What part of an atom is electrically neutral? A:
Answer:
neutrons