Biology
Biology, 24.12.2019 20:31, flelea

Afield is abandoned, and an invasive plant that can live in nutrient-poor soil moves into the field. if the land is later cleared of this invasive species and it is discovered that the soil has an abundance of nitrogen compounds, what conclusion can best be made

a. the plants used up all of the phosphorus and potassium and left the nitrogen behind.
b. primary succession always produces an abundance of nitrogen.
c. bacteria in soil and in root nodules converted free nitrogen into nitrogen compounds.
d. the plants were able to produce nitrogen in their leaves.
e. more rock was weathered and broken down to release nitrogen compounds.

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Afield is abandoned, and an invasive plant that can live in nutrient-poor soil moves into the field....

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