Nitrogen fixation occurs when which of the following happens? O Bacteria absorb nitrogen and release it as carbon dioxide.
Bacteria convert nitrogen to a form that plants can use.
O Plants absorb the nitrogen from both the soil and the air.
O Plants break down the nitrogen and use it as a nourishing sugar.

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Can someone me with 1 to 4 plz. fast

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?