Q: You are presented with the quiz "recycling reduces what when making something?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "recycling reduces the resources needed to make something" and "recycling saves resources and reduces pollution". So, what's the best answer to the question? | OPTIONS:
- fossil fuels
- pollution
- Energy.
- less water
- power
- energy
- Heat energy
- deforestation
A: pollution

Q: You are presented with the quiz "what does tobacco harm?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "smoking tobacco decreases stamina" and "all smoke is harmful to the lungs". So, what's the best answer to the question? | OPTIONS:
- lungs
- plants
- cancer
- cells
- tissue
- blood
- kidney
- people
A: lungs

Q: You are presented with the quiz "What is left over when salty water is heated?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "heating salt water causes the water to evaporate while the salt remains" and "for example, in salt water, salt is the solute and water is the solvent". So, what's the best answer to the question? | OPTIONS:
- Time and energy
- nutrients
- Sediment
- energy
- bacteria
- Energy.
- loose soil
- The solute
A: The solute

Q: You are presented with the quiz "The age of a fossil can sometimes be determined by what method?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "radioactive dating is used to determine the age of fossils" and "carbon 14 Dating Perhaps the best known radioactive dating is based on ". So, what's the best answer to the question? | OPTIONS:
- microscope
- an electron microscope
- fossilized electrons
- fossilized gamma rays
- Carbon fibers
- carbon 14 dating
- chemical equations
- Physical weathering
A: carbon 14 dating