PEDOLOGY AND SOIL PROTECTION

According to the gran size we divide soils into:
1. sandy, clay, loamy
2. sandy, light, loamy
3. clay, heavy, loamy
The important part of soil is not:
1. live organisms
2. soil water and air
3. arcificial fertilizers
An erosion is:
1. fertilization and farming
2. soil erosion and and loss
3. using of heavy mechanization
EDAFON is:
1. a set of plant and animal organisms in the soil
2. a set of plant organisms in the soil
3. a set of animal organisms in the soil
According to the fertility we divide soils into:
1. black soil, brown soil
2. black soil, brown soil, podsols
3. black soil, sandy, loamy
What is humus?
1. fertilizer in the soil
2. a set of organic substrates from breaking down bodies of died organisms
3. artificial substance, uměle vytvářená látka, added into the soil
The free spaces between solid particles of soil are filled by:
1. soil water
2. soil air
3. soil water nad air
Soil is:
1. animated component of environment
2. inanimated compotent of environment
3. on the boundary between inanimated and animated nature
The problem of soil pollution is not:
1. overused fertilization
2. pesticides
3. humus
Desert spreding is:
1. soil loss
2. overused fertilization
3. spreading of deserts