What is one thing in the natural world that your curious about?

Something that I'm curious abouts about is how the animals have to eat each other in order to survive. Also i have heard that there are fishes that even eat the excrement of the other fishes just to maintain the water cleaner and healthier. I want to learn more about the pants and do they help other plants, and the animals around them. Another thing that im curious about is the ecosystem and how it works. how is it that the most minimal thing helps create a better world, and what can we do to maintain the world like that.