Layers of the Soil Profile
The number of layers in the soil profile
5
They layer made of solid rock
R horizon
Which R means to put something in a composting bin to decompose?
Rot
Positive or Negative Impact on the Environment: You leave your car running for 20 minutes when you aren't driving.
Negative impact on the environment.
Soil is made of...
weathered/broken rocks, decayed plants/animals (humus)
The very top layer of the soil profile
O horizon
Which R means to give materials you are done with to be remade into something else?
Recycle
How could you reuse an aluminum can?
Many possible answers
True/False: All areas have all 5 layers of the soil profile
FALSE
The layer called topsoil
A horizon
Reuse means to use something again in a different way.
What are three things you can "rot"?
Many possible answers
What is our soil like in Maryland?
Clay like
The other name for the B horizon
subsoil
Which R means to use less or to use only what we need?
Reduce
Why is recycling not the best R?
Recycling uses gas (trucks picking up and dropping off materials), energy (the factory that recycles the materials), and doesn't always work if the materials are dirty or near dirty materials.
How does soil form?
Rock is weathered and eroded down into very small particles and mixed with decaying living things to form humus
The layer of the soil profile that contains some large rocks and some soil
C horizon
Which R means to say no or to turn down taking something, so you can save it?
Refuse
Which R is the one we should try to do 1st?
Refuse