Biology
Biology is the study of living things: how they are built and powered, how they pass traits to their offspring, how they fit into their surroundings, and how they change across generations. Those threads meet in one unifying idea — evolution — which is why it's the first place Fathom drills down. Genetics supplies its mechanism of inheritance, and ecology supplies the pressures that shape it.
Drill down
Evolution
The change in heritable traits of populations over generations — and the common descent of all life, backed by converging independent evidence.
Genetics
How traits are stored in DNA and passed from parents to offspring — the inheritance mechanism evolution depends on.
Ecology
How organisms interact with each other and their environment — the source of the pressures that drive natural selection.
Related docs
hierarchy prerequisite related