Biology, 14.12.2020 18:00 christson805
7. Which statement is correct?
1. Nitrogen must cycle through an ecosystem because it is used to make
proteins and nucleic acids.
2. Nitrogen makes up most of Earth's atmosphere.
3. Nitrogen gas from the atmosphere cannot be used by plants to make organic
compounds.
4. all of the above
Answers: 3
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Answers: 2
Biology, 22.06.2019 00:30
Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?
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Biology, 22.06.2019 19:00
If garbage is left on the street flies in microbes can arise from nothing to feed on it true or false
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Biology, 22.06.2019 20:30
For which of the following ions is the intracellular concentration typically higher than the extracellular concentration? a. sodium b. calcium c. magnesium d. potassium e. chloride
Answers: 1
7. Which statement is correct?
1. Nitrogen must cycle through an ecosystem because it is used to ma...
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