Layered Lollipops is an interesting analyze into density. Will make a gorgeous experiment that smells amazing! But the big term is "Evapotranspiration", that's just a combination of "evaporation" plus "transpiration". This just means that don't just are vegetation transpiring water from their leaves, water is evaporating from your soil https://angelogbtkb.activablog.com/19945941/water-cycle-science-for-kids-fundamentals-explained