Problem: OPTIONS:
- sky
- soul
- grass
- water
Q: Q: It was not until the era of the ancient greeks that we have any record of how people tried to explain the chemical changes they observed and used. at that time, natural objects were thought to consist of only four basic elements: earth, air, fire, and this? A:
Answer: water

Problem:OPTIONS:
- feature
- characteristic
- species
- adaptation

Q: In desert cactus, thorns that protect the water held in a large, barrel-shaped stem are an example of what? A:
****
A: adaptation

Q: After infecting a host, what inactive state do some viruses enter? A:
OPTIONS:
- hibernation
- immunity
- potency
- latency
latency

Q: What can be hard or even impossible to perform in a scientific sense? A:
OPTIONS:
- hypothesises
- idea
- theorys
- experiments

Answer: experiments

Question: Q: What form does formaldehyde take at room temperature? A:
OPTIONS:
- solid
- liquids
- plasma
- gas
Answer: gas

input: OPTIONS:
- electrical circuit
- capacitors
- spark plugs
- magnetic field Now, answer this question: Q: Motors are the most common application of magnetic force on current-carrying wires. motors have loops of wire in this? A:
A:
output:
magnetic field