Chapter 4.3 Factors Affecting Ecosystems Flashcards
1
Q
The upper layer of soil, composed mainly of partially decomposed leaves or grasses.
A
Litter.
2
Q
The soil layer beneath the litter, composed of small particles of rock mixed with humus
A
Topsoil.
3
Q
Decaying plant and animal litter.
A
Humus.
4
Q
The soil layer beneath the topsoil, usually containing more rock particles and less organic matter than the topsoil
A
Subsoil.
5
Q
The layer beneath the soil, composed of rock.
A
Bedrock.
6
Q
Water in the soil or rock below Earths surface.
A
Groundwater.
7
Q
The upper level of a fake, which warms up in summer.
A
Epilimnion.
8
Q
The lower level of a lake, which remains at a low temperature year round.
A
Hypolimnion.
9
Q
The zone between the epilmnion and hypolimnion, in which temperature changes rapidly.
A
Thermocline.
