The government is implementing policies to address declining fertility rates.

Before the season, they evaluated soil fertility to decide which crops would thrive.

Many animal species rely on internal fertilizations to successfully reproduce in terrestrial environments.

At the conference, scientists discussed several cross-fertilizations between agricultural and wild plant species and their potential consequences.

Researchers observed that the timing of external fertilizations in the coral reef synchronized with lunar cycles.

Researchers documented multiple self-fertilizations in the isolated snail population, which affected genetic diversity.

Self-fertilization can decrease genetic diversity in plant populations by allowing an individual to fertilize its own ovules.

The valley by the lake had the fertilest soil in the county, yielding abundant harvests every year.