The agency has permitted five categories of research with human embryos, all related to human fertility.

Both the game and documentary educated viewers on human fertility.

The game extended this education by giving the viewer a hands-on experience on the subject of human fertility.

"They are the basis by which human fertility is measured."

All animal and human fertility depended on this ritual being acted out.

They may be representations of human fertility, or they may have been made to increase it.

Our talk started on the subject of human female fertility.

Or maybe there's something in Erehwon's soil that is increasing human fertility.

With human fertility, Ala is credited for the productivity of the land.