Soil, Reading Simple Solutions 43-45 Review

What is soil?

• the stuff in the air

• A mixture of rocks, air, minerals, water, and humus

• rocks only

• living things

The dark brown remains of plants and animals that have decomposed is ______

• hummus

• soil

• humus

• silt

What are the 3 (pick 3!) different types of soil?

• sand

• silt

• clay

• humus

Loam, a mixture of the three soil types, is best for growing plants.

• True
• False

What does it mean if something is organic?

• it was or is living

• it was or is nonliving

• it is soil

• it doesn't mean anything

What are the three layers of the soil?

• topsoil

• subsoil

• bedrock

• clay

What is the top layer of the soil, that contains: humus, air, water, and nutrients?

• topsoil

• subsoil

• bedrock

What is the second layer of the soil, that contains: clay, small pieces of rock, root systems?

• topsoil

• subsoil

• bedrock

What is the last layer of the soil, that is the outermost layer of Earth's crust?

• topsoil

• subsoil

• bedrock

Plants, animals , and everything we eat does not depend on healthy soil.

• True
• False