Problem:OPTIONS:
- transistors
- generators
- tubes
- transformers

Q: Electric substations have what devices, which use electromagnetic induction to increase or decrease the voltage of the current? A:
****
A: transformers

Q: What is the term for rain consisting of water with a ph below 5? A:
OPTIONS:
- carbon rain
- produce rain
- Hot Rain
- acid rain
acid rain

Q: Air quality is a measure of what in the air? A:
OPTIONS:
- clouds
- gases
- water
- pollutants

Answer: pollutants

Question: Q: Sensory organs that respond to particular sensory stimuli contain cells called what? A:
OPTIONS:
- artificial receptors
- stimulus receptor
- whole receptors
- sensory receptors
Answer: sensory receptors

input with options: Q: Represented in equations by the letter "g", what pulls objects down to the earth's surface? A:
OPTIONS:
- energy
- motion
- light
- gravity
output: gravity

Problem: OPTIONS:
- crust
- pyrite
- rock
- magma
Q: Q: What is lava called before it reaches the surface of the earth? A:
Answer:
magma