Ch9 Soils Flashcards
1
Q
Soil is made up of a number of elements what are they?
A
1) mineral matter
2) humus
3) air
4) water
5) living organisms
2
Q
How does humus form?
A
Humus forms when plants and animals decay and rot
3
Q
What is air made up of?
A
Air contains Oxygen and nitrogen, which is vital to plant life
4
Q
What are living organisms?
A
Earthworms,wood lice and millipedes
