Problem: Write a question you would see in a school textbook.

Answer: A scientist combines oxygen and hydrogen to form water. This combination illustrates that water is

Problem: Write a question you would see in a school textbook.

Answer: Which characteristic is found ONLY in mammals?

Problem: Write a question you would see in a school textbook.

Answer:
Quartz and feldspar are two common minerals. When they are found mixed together in nature they form