Lichens grow on:
soil
water
rocks
pots
A soil poor in nitrogen and humus
Desert soil
Alluvial soil
Red soil
Mountain soil
The best protectors of topsoil
plants and trees
humans
animals
microorganisms.
The different layers of soil from the surface to the bedrock below forms the:
parent rock
gravel
subsoil
soil profile
A mineral seen as shiny particles in the sand:
Quartz
clay
mud
silt
Soil is formed by the breaking up of
minerals
plants
A thing used for making pottery:
sand
Where is sandy soil usually found?
in desert areas
in polar areas
in equatorial areas
both a & b
Sandy soil contains sand to about
10-15%
60-70%
70-80%
none of these
The natural process of breaking down of huge pieces of rocks into fine particles of soil:
Soil profile
weathering
ploughing
tilling
