Why do mosquitoes and frogs lay many eggs at a time?

Oh, dude, mosquitoes and frogs lay a bunch of eggs because they're playing the numbers game. Like, not all of them are gonna make it, so they're just like, "Let's throw a bunch out there and hope for the best." It's like a little gamble they're taking, you know? Plus, they're just trying to keep their species going strong, so they're like, "Let's make a whole bunch of mini-mes and see who survives."