a specific hypothesis to test with a controlled experiment
3 NaOH + FeBr3 = 3 NaBr + Fe(OH)3
Hope this helps!!
Answer:
The process is called Nitrogen fixation
Explanation:
The nitrogen fixation is a process carried out by some prokaryotic microorganisms (bacteria), specifically those have the presence of the nitrogenase enzyme. The bacteria absorb the atmospheric nitrogen (N2) from the roots of plants, and the nitrogenase enzyme, with the help of two proteins that act as electron donors and acceptors (nitrogenase complex) reduce the nitrogen to ammonia (NH3), then the ammonia is ionized to NH4+ (ammonium). Followed by that, the ammonia is oxidated to nitrates and nitrites, which are finally absorbed again by plants.
The answer that fits the blank are ONE and TWO, respectively. Given Elliot's study or experiment, she has only one experimental group and one control group which brings to the fact that she has only one independent variable that has two groups.
The answer would be B) False cause a line graph only shows ''two'' variables, not three.
