|
|
|
3
|
a measure of how well the soil supports plant growth
|
|
5
|
consists of clay and other particles of rock, but little humus
|
|
6
|
measures acidity
|
|
8
|
layer of soil that differs in color, texture, and composition from the layers above or below it
|
|
9
|
solid layer of rock beneath the soil
|
|
10
|
soil that is made up of about equal parts of clay, sand, and silt
|
|
|
|
|
|
|
1
|
the loose weathered material on Earth's surface
|
|
2
|
organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals
|
|
4
|
decayed organic material
|
|
7
|
crumbly, dark brown soil that is a mixture of humus, clay, and other minerals
|
|
|
|
