Moreover, tadpoles don't just grow magically into full sized frogs. What are they eating? There's simply not enough biomass available in any location to support

Moreover, tadpoles don't just grow magically into full sized frogs. What are they eating? There's simply not enough biomass available in any location to support that many frogs growing to maturity and then keeping them alive. Unless you've got 100M ladybugs, I guess.