A noted biologist, who had been studying little green
frogs in a swamp, was stumped. The frog population,
despite efforts at predator control, was declining at
an alarming rate.

A chemist at a nearby college came up with a solution:
The frogs, due to a chemical change in the swamp water,
simply couldn't stay coupled long enough to reproduce
successfully.

The chemist then brewed up a new adhesive to assist the
frogs' togetherness, which included one part sodium. It
seems the little green frogs needed some monosodium glue
to mate.