Bees produce crystalline combs of the goo they ate. This on it's own is reason enough for the bees, as the combs will be worth a touch more than the amount they consumed (25% of a relatively small amount [eg 15, of 60]), and contain just a tiny bit of crystal [eg 1].

Snails eat crystalline combs to produce primordial goo. Primordial goo is a rare resource used to produce specific valuable things and, on its own, can be used to do some specific utilitarian things. Primordial goo produced will be configurable and very lossy.

Slimes fed a goo crystal will digest the crystal and become a slime variant of that goo type. This tames the slime. From this point forward, the goo slime will feed on primordial goo produced by snails, causing it to grow. Periodically you can squish the slimes to obtain the goo they're made of, completing the production triangle. The idea here is default configurations would have the slime produce more from the Primordial goo than then bees produced in the comb, and certainly more than they ate in the first place. So if it took 60 goo to make a 75 goo 1 crystal comb, the snails eat the comb and make, for example, 5 mB of primordial goo, the slimes would take that 5 primordial goo, eat it, and make 100 goo. This is just an example.

Actual values TBD.

Bees are done. Leaving this open for the rest.