GR3-NOV WK 1 S3-COMPOSITION OF SOIL
Quiz by SABA IRFAN NISAR
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- Q1
Which layer of soil contains the most humus?
subsoil
bedrock
topsoil
dirt
45s - Q2
�What is the decayed remains of plants and animals called?
bedrock
soil
humus
weathering
45s - Q3
Why is soil an important natural resource?
soil comes from bedrock
soil is used to make buildings
soil is full of microbes
soil can grow crops
45s - Q4
What is the slow breaking apart of wearing away of rock into smaller pieces?
weathering
soil
deposition
erosion
45s - Q5
�How do plants weather rocks?
When roots grow into cracks of rocks and expand the rock breaks
When the plant moves water from the roots to the leaves, the rock breaks.
none of the above
Plants don't weather rocks.
45s - Q6
The layers of soil are called these. �
Horizons
Humus
Grains�
Pores
45s - Q7
This is the smallest type of soil particle.
Sand
Clay
Silt
Gravel
45s