Como las actividades humanas modifican el ciclo del nitrógeno, fósforo y el del carbono

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

b brown mice / white sand dunes

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

i think the answer would be d