5 Written Questions
5 Multiple Choice Questions
- only one direction til its used up
- involve chemical substances that organisms need to sustain life
- carbon, nitrogen, phosphorus, and oxygen
- biological, chemical, and geological aspects of the biosphere.
4 True/False Questions
Nitrates from in 2 ways.... → *nitrification
Organisms need _________ to produce amino acids which form proteins. → 79%
Denitrification → sends nitrogen back to the atmosphere from nitrates, nitrites, and ammonia.
Nitrogen makes ____ of the atmosphere. → 79%