Q: You are presented with the quiz "What are two ways you can save food?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "dehydrating food is used for preserving food" and "to preserve a food by salting". So, what's the best answer to the question? | OPTIONS:
- Fully cooking the oysters
- Burning fuel and air
- Bread it and fry it
- Water it down and drink it
- converting electricity to heat
- lowered energy cost
- Dehydration and salting
- Burn it and throw it away
A: Dehydration and salting

Q: You are presented with the quiz "What have sense organs to smell and taste chemicals?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "amphibians have sense organs to smell and taste chemicals" and "frogs are classified as amphibians". So, what's the best answer to the question? | OPTIONS:
- viruses
- the Sun
- sharks
- bacteria
- humans
- frogs
- bears
- Birds
A: frogs

Q: You are presented with the quiz "What does evolution study over time?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "evolution is a change in the characteristics of living things over time" and "evolution is the study of living things with time". So, what's the best answer to the question? | OPTIONS:
- Plant reproduction
- sensory neurons
- Plants growth
- Animal survival
- survival
- competition
- characteristics
- light energy
A: characteristics

Q: You are presented with the quiz "Which type of pollution is most harmful to lungs?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "air pollution harms the respiratory and circulatory systems" and "exposure to ozone can diminish lung function and increase susceptibility to respiratory infection". So, what's the best answer to the question? | OPTIONS:
- Lead
- air
- Cars
- oil
- acid
- CFCs
- SO2
- mold
A: air