Answer:
They change nitrogen gas into nitrates for plants to make proteins.
Explanation:
Nitrifying bacteria and Nitrogen-fixing bacteria work together to convert nitrogen gas into nitrates which plants use to make DNA, RNA, and amino acids (which are used to make other proteins).
We use the scientific methode to collect measurable, empirical evidence in an experiment related to a hypothesis.
SOS:
The answer is <u><em>genetic recombination!</em></u>
<em>Hope this helps!</em>
Fluorine is a nonmetallic, diatomic gas with the symbol F and atomic number 9. Atomic number represents the number of protons in the atom. When F is neutral it means that the number of protons is equal to number of electrons. But, when F is an ion (F-), the it has more electrons (10) than protons, meaning its an anion.