Choose the correct alternative.

1. Why is wood used to make saunas?

It is natural.
It looks expensive.
It conducts heat very weakly.
It conducts heat very easily.
It conducts electricity very easily.

2. What is the most common raw material used in paper?

quartz sand
crude oil
PVC plastic
coal
cellulose from wood

3. What kinds of materials can be used to make paper?

plastic chunks
fibers
rock dust
bee spit
oil

4. Which animal species is capable of making paper?

bee
silkworm moth
ant
wasp
bumblebee

5. Which animal species is the most widely used in wool production?

camel
goat
sheep
vicuna
alpaca

6. Which plant produces seeds that can be used to make fibers?

hemp
flax
nettle
pine
cotton

7. Which plant was used by the Vikings to create fibrous materials?

cotton
flax
nettle
hemp
pine