What If?

I thought that these videos we watched were every interesting and made me think. What would happen if we contaminated our water source? What if the rain forest was completely destroyed? Most importantly, what would happen to us, the people, and animals? Those are some questions that really hit me and made me think "what if?". I think a lot of people don't understand what destroying the earth's biomes will do and how it will affect us and animals alike. If these biomes are to be destroyed, it can destroy other habitats, kill many different animals and change the world.