3. Experiments with soil (3 minerals)
...So01 Finger test to examine the quality of soil
So02 Water
content
and density of different soil samples
So03 Dried up
soil:
Does it contain water?
So04 How much
air
is in the soil sample of So3?
.So05 Soil may contain
acids
or their opponents
So06 Salts are
dissolved
in soil
So07 Soils as
environment
of animals
So08 Potatoes
and
fungi grow in the soil
So09 Red soil
contains
iron compounds
So10 Lime soil
1:
Limestone mining and processing
So11 Lime soil
2:
Baobab Farm, recultivation of a former limestone quarry
So12
Aquaculture:
Plants may grow without soil