Mo was very busy pressing his face up against the glass of the tank and making squishy faces at the coral in the tank (coral... btw... animal... Was this CoMC?) and marveling over how pretty it all was. He kind of wanted a tank. With stuff in it. Not those fish that had to fight all the time, though, because honestly, how lame was a tank with only ONE fish?

Ecosystems, hmm? "S'like if you take all the plants and the animals and the way they work together to keep each other alive, right? I kind of think it has to do with environmental factors too, though... because a rainforest will need lots of rain and an equatorial climate to sustain all the plants and animals." But maybe that wasn't the technical definition. He just figured that all the plants and animals in a rainforest wouldn't survive, even if taken in entirety, if they were in a desert.