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The Grand Canyon was formed by weathering. True or false?
true
Clay particles are invisible to the naked eye.
true
How do roots cause weathering?
They can break the rocks apart.
What happens when water freezes?
It expands.
What kind of weathering dissolves the minerals in a rock?
Chemical
Soil is made up of huge particles of rock and parts of plants. True or false?
false
How many layers of the soil are there?
4
What 2 animals can cause biological weathering?
worms and rabbits
Acid rain is good for rocks. True or false
false
When water freezes in between cracks in rocks, what can it do to the rock?
It can break it into smaller pieces.
What are the 3 types of weathering?
physical, chemical, biological
How may types of weathering have we studied?
3
Humus has nutrients that help plants grow. True or False?
true
Silt is the largest particle of soil. True or False?
false
Humus is decayed plants and animals. True or False?
true