Nitrogen-fixing bacteria is(are) indicated by the letter(s) . The nitrogen cycle. Each letter indicates a definite member of this cycle. Letter A indicates bacteria that convert nitrates (NO3 minus) to nitrogen (N2) and release it to the atmosphere. Letter B marks bacteria that transform nitrites (NO2 minus) into nitrates (NO3 minus). Letter C marks bacteria that transform ammonium (NH4 plus) into nitrites (NO2 minus). Letter D marks bacteria that transform nitrogen (N2) of the atmosphere to ammonium (NH4 plus). Letter E marks bacteria that assimilate nitrogen (N2) of the air and are located in the root nodules.

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measuring physical properties lab reportinstructions: in the physical properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in tiny world. record your observations and test measurements in the lab report below. youwill submit your completed report.name and title: lyric lawton, mr.herbert, 10/13/17, physical properties lab. objective(s): i need to parvus build his house out of the right material, so he will stay cool in the mountains.hypothesis: if we use wood to build the roof of the house, then the temperature inside the house will remain cooler.if we use clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler.if we use aluminium to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.if we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.