soil
Rocks
Mineral
soil #2
other
100
O horizon is called
Humus
100
rocks are made out of
minerls
100
talc is number _ on the mahs hardness scale
1
100
o horizon has
worms
100
name the layers of soil
200
Bedrock is
Parent rock
200
extrusive ingenues rock is
rock that drys outside a volcano
200
number 10
dimand
200
one table spoon of soil has more organisms than the amount of
people on earth
200
true or false the c horizon has Weathers rocks
true
300
Another name for the a horizon is
top soil
300
intrusive igneous rock is
drys in a volcano
300
talc can be scratched by a
finger nail
300
there are ______ types of soil in the us
70000
300
wich one goes first b horizon or a horizon
a
400
b horizon is
sub soil
400
metamorphic rock is
a rock melting together to form a new rock
400
a diamond can be scratched by a
diamond
400
____ percent of earths water holds soil
.01
400
top soil is
a horizon
500
The c horizon is
Weathered rock
500
sediments are caused by
weathering and eroting
500
number 9
corundum
500
what is soil made out of
air water minerals organic matter inorganic matter
500
bedrock is
bedrock