Q: You are presented with the quiz "What can keep a home warm?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "insulated material can be used for keeping warm" and "building insulation is a cellulose material made of ground computer paper and cardboard boxes". So, what's the best answer to the question?

OPTIONS:
- cellulose material
- an electric stove
- Movement of an air mass
- plastic wrap
- water
- bubble tape
- electricity
- Animal fur

A: cellulose material

Q: You are presented with the quiz "Organisms in which class have beaks that are generally adapted for the food they eat?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "bird beaks are generally adapted for the food they eat" and "all birds are placed in the Class Aves". So, what's the best answer to the question?

OPTIONS:
- apples
- Mammalia
- koalas
- voles
- Agnatha
- Aves
- Reptilia
- edible

A: Aves

Q: You are presented with the quiz "What is produced when plastic is made out of petroleum?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plastics are made from petroleum and produce toxic waste" and "pollution issues include toxic waste disposal". So, what's the best answer to the question?

OPTIONS:
- dangerous
- bioaerosols
- emissions
- hydrocarbons
- pollution
- heat produced
- Pesticides
- heat energy

A: pollution

Q: You are presented with the quiz "changing from a liquid into a solid by reducing heat energy what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "freezing means changing from a liquid into a solid by reducing heat energy" and "solidification , or freezing, occurs when a liquid turns into a solid". So, what's the best answer to the question?

OPTIONS:
- heats up
- Evaporation
- Dehydration
- warms
- kinetic energy
- melts
- boiling
- solidifies

A:
solidifies