Soil helps trees
because soil
Soil is a mixture of
Gives nutrients to the
trees
Sand, rocks, and humus.
Which part of the
plant carries water
from the soil to the
plant?
Humus is
Which part of a rock will
changed as it is
weathered?
What type of weather
causes the most
weathering?
The roots
Decayed plants and
animals
The size
Rainy weather
Most grasses grow in the
topsoil
Clay holds water better
than
humus
Rock, silt, and sand are all
Normal parts of soil
Plants grow better in
What is formed when
freezing water cracks
rocks apart?
topsoil
sand
Humans should protect
topsoil. Topsoil is the
layer where
plants grow
Topsoil is made of
Weathered rocks and
humus
Humans are dependent on
soil because
It provides support and
nutrients to the plants we
eat.
A rotting tree stump helps
the environment by
Decomposing and
forming humus
Soil provides plants with
support
Which layer contains most
of the nutrients that plants
need to live?
topsoil
A natural product of
subsoil and bedrock is
topsoil
Weather, water, and living
things cause the
Breaking down of rocks
What are materials that
plants and animals need to
live?
nutrients
What are the components
of soil?
Rocks, silt, and humus
The upper layer of the soil
is the
topsoil
The subsoil and the
bedrock are formed over a
long period of time by the
action of
water
The middle layer of soil is
the
subsoil
The bottom layer of soil is
the
What type of soil holds
water well?
bedrock
What are small grains of
worn-down rock?
sand
What is made of very
small broken pieces of
rock?
Which type of soil does
not hold water well?
clay
silt
sand
Weathering is
the changing of the earth’s
surface
What breaks down the
earth and its rocks?
Weathering produces
Water and wind
What feels like powder?
silt
soil
Which soil type feels
sticky and gummy when it
is wet?
clay
Forests would have
the most topsoil