What does soil consist of?
Bits of rock and bits of once living (now dead) plant and animal matter.
What do dead animals and plants transfer back to the soil?
Organic nutrients that help nourish plants.
What is humus made up of?
Decayed materials, nutrients, and moisture (water).
What are layers of soil called? How many are there and what are they called?
There are THREE HORIZONS: A,B, and C.
What are the characteristics of the B-Horizon in soil?
Less humus than topsoil, more fine particles of rock, clay-like.
Describe the C-Horizon.
Mostly made up of larger pieces of weathered rock.
How could erosion change soil horizons and how plants grow in that soil?
Wow, you really know your stuff! / Sorry, we were looking for...
What properties of soil are best for farming? Name two.
Rich in humus, low in pollutants, having moisture.
How does soil pollution occur?
Chemical and garbage dumping, etc.
What methods are used to conserve soil? Name four.
Individual effort, wind breaks, education, terracing, strip farming, fertilizing, crop rotation, contour plowing.
What is strip farming?
Planting rows of grass between crops.
