The sounds from tree frogs is a welcome sign of Spring! We always called them "Peepers" and when they sang at night, we would know that Spring rain was on the way :)

Lakes are a natural part of the environment naturally fixed bodies of water, part of the hydrosphere and mostly made out of fresh water. Lake water can evaporate and then become condensed and falling down as rain, resuming the water cycle. They're beautiful, and can support a great number of organisms with fresh water, and are completely natural to the planet.