Rocks and Minerals

What is the 2nd layer of soil, which does NOT contain humus?

• subsoil
• topsoil
• bedrock

What is the loose material on the surface of the earth called?

• bedrock
• soil
• humus
• fossil

What is the layer of soil where plants grow and contains humus?

• subsoil
• bedrock
• topsoil

What is the term for any part or mark of a living thing that is preserved after it dies?

• fossil
• humus
• soil

What are the remains of living things that have decayed or died?

• soil
• fossil
• humus

The surface of the earth is always

• staying the same
• changing

The breaking down of rocks is called 

• weathering
• soil
• humus

Hard pieces of the earth's surface are called

• fossils
• soil
• rocks

Water, wind, ice, and ____ can break apart rocks?

• plants
• dirt
• air

What are solid materials in nature that were never alive?

• fossils
• rocks
• minerals