Can anyone explain to me the "all or nothing law" of action potentials? i'm in a college physiology class, and i do not understand this concept.

The all or nothing law of action potentials mainly talks about how the axons in the neurons only fire when there is enough action potential to fire. If there is not enough action potential, then the neuron will not be able to send signals because the action potential does not fire because of the deficit.

There would be no evaporation so no water cycle

B.) nitrogen fixationnitrogen fixation is the process of nitrogen molecules seeping into the soil and inside plant roots and bacteria. it gives more "life" to plants