Concept 4.2 lesson 1

What is decayed matter (from plants and animals) soil called?

• humus

• silt

• clay

What do plants need to live and grow?

• nutrients

• clay

• rocks

Why is soil important to the forest?

• It stores sunlight in the leaves

• It attracts insects that eat leaves

• It provides nutrients to the trees

• It warms the air around the trees

Why is it important to protect soil?

• Because soil dries quickly.

• Because soil keeps us dry.

• Because we need soil to build things.

• Because plants need soil to grow.

Soil is important for....

• animals

• plants

• plants and animals

Soil provides support and nutrients necessary for plant growth.

• True

• False

Soil is one of the _____ things that organisms depend on.

• living

• nonliving

• fastest

• nicest

Because _____ are the main source of food for humans and animals, living organisms depend on soil to survive.

• animals

• plants

• rocks

• chairs

What is the movement of soil from one place to another?

• weathering
• deposition
• discharge
• erosion

The MAIN  thing Decomposers do for the the soil is the following:

• Store moisture
• Burrow deep in the soil
• Make space for air and water
• Break down and digest dead organisms