Here is a very simple set of slides to complement your lecture about the importance of water for animals. It includes a table of where we gain liquid from, the chemical reaction for aerobic respiration, how we lose water, and how ADH and...

Ginkgo trees existed for more than 350 million years, and, at this time, only one species still remains. While plant diversity generally increases over geologic time, some interesting exceptions occur. Young scientists learn about plant...

This slideshow offers students opportunities to observe, identify, and describe various characteristics of water bodies and compare near-ground-level and aerial views of each water body.