what are the 4 components of soil? (BAMM)
- bacteria and organic materials
what are bacteria and organic materials?
dead plants and animals decompose
what is air?
small air pockets in soil allow roots to spread and soil to drain
where do minerals come from?
parent rock deposited by wind, glaciers, rivers, etc
what is moisture?
water taken up by plants necessary for survival and chemical, physical processes
name the 4 layers of soil in descending order
what is humus?
what is topsoil?
what is subsoil?
what is bedrock?
where minerals form
more pressure = _____ rock
what are the 3 main types of vegetation in canada?
where is the tundra?
how is the tundra marked?
by the tree line
why are the tundra growing conditions bad?
what are the 2 types of forests in canada?
what kind of trees are in the north?
what kind of trees are in the south?
what are grasslands?
prairies and grass
are there many trees in the grasslands?
where are the deep root systems?
which area is drought resistant?