is/are defined as a group of potentially breeding organisms within a species in a given space and time.

Population.

Explanation:

Population may be defined as the smallest unit of ecology and the evolution might occur at the population level.

Population is the group of the organisms that belong to the particular species and lives in a specific particular habitat. The individual of the population breeds among themselves. Sometimes the individual of two different population can also breed among themselves in extreme cases.

Thus, the answer is population.

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.

carbon

explanation: