10
AssignmentMultiple Select

Cycles of Matter

Question 10 • TX-Earth Systems A

Sample Response: When farmers harvest crops, a lot of the plant material is also removed. Little is left to decay and return nitrogen to the soil. If the soil stays this way, it will start producing fewer crops. Fertilizer contains the nitrogen compounds that are essential for plant growth. It can be used to replace the nitrogen in the soil to ensure the growth of healthy crops. What did you include in your response? Check all that apply.When farmers harvest crops, a lot of the plant material is

Answer
A
When farmers harvest crops, a lot of the plant material is also removed. Little is left to decay and return nitrogen to the soil.
B
If the soil stays this way, it will start producing fewer crops.
C
Fertilizers contains the nitrogen compounds that are essential for plant growth. It can be used to replace the nitrogen in the soil to ensure the growth of healthy crops.

Explanation

The sample response includes all three ideas. It says harvesting removes plant material and leaves little to decay and return nitrogen to the soil (A), warns that the soil will produce fewer crops if this continues (B), and explains that fertilizer replaces nitrogen compounds needed for healthy plant growth (C).

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