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Note that your final mark will not be saved in the system.
3.1.2.1 Ecosystems GapFill
Target Level
4-5
Running Total
0
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Attempt
1 of 3
You must fill all the gaps before clicking ‘Check Answers!’
Nutrients are such ingredients as nitrogen and
. All plant and animal life need
. They pass within the
and change their
. Rainwater
nutrients out of the atmosphere into the soil. Weathered rock releases nutrients into the
. Volcanic rock release nutrients from the
into the
and soil. Plants and animals
the nutrients. When they die, the dead material is broken down by
. The nutrients then
to the soil making them available again for other plants and animals to use. This is called the nutrient
.