What does a magnetic field tell us about two magnets placed side-by-side

Two bar magnets side by side but with their fields perpendicular to each other.  This shows the magnetic field strength around these two magnets. It is zero at the bottom between the two magnets, where the fields circulate around from one to the other.

Explanation:

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.