question: Write a question you would see in a school textbook. OPTIONS:
- sugar dissolving in water
- water evaporating in air
- lighting a match
- freezing water
answer: Which activity is an example of a chemical change?

question: Write a question you would see in a school textbook. OPTIONS:
- The females will find another type of male animal to mate with and produce more Siberian tigers.
- The females will mate with each other and produce more Siberian tigers.
- The females will only be able to produce female Siberian tigers.
- The females will not be able to produce more Siberian tigers, and they will die out.
answer: Some animals are very rare. For example, there are very few Siberian tigers. If the only Siberian tigers left are female, what will most likely happen?

question: Write a question you would see in a school textbook. OPTIONS:
- Both can conjugate.
- Neither can conjugate.
- An amoeba can conjugate, but a paramecium cannot.
- A paramecium can conjugate, but an amoeba cannot.
answer:
Which is true about reproduction for both an amoeba and a paramecium?