Final answer:
Individuals are smaller units within a population and individuals make up a species.
Step-by-step explanation:
In the organization of the biosphere, individuals relate to the population in the following ways:
- Individuals are smaller units within a population. For example, in a forest, each pine tree is an individual organism, and all the pine trees together make up the pine tree population.
- Individuals make up a species. A species is a group of individuals that are genetically related and can breed to produce fertile young. For example, in Homo sapiens, sapiens is the species name.
Therefore, options (a) and (b) are correct.