Which of the following correctly states conditions in which a weak base is mostly ionized?
1. ph is greater than pkb
2. pkb is less than the ph
3. more than 0.5 equivalents of oh-is added to the solution
4. ph is less than pkb

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.

easy

explanation: