Before it erupted on May Mount St. Helens was a perfectly shaped stratovolcano. It was formed by many eruptions over years. The 1980 eruption tore feet off the mountain’s top! It left the crater shaped like a horseshoe.
Deserts are the driest places on Earth. Cacti can live here because their stems have a thick coating that helps them store water longer than most plants. Other plants, such as mesquite trees, survive because they have roots up to 80 feet long, which take in water from deep underground. Pictured is a giant saguaro cactus. | Plants Around the World | Kids Discover
In the 1970s, we started using more resources than Earth could grow back. We also started making more waste than Earth could absorb. We’re using resources now faster than nature can replace them. Scientists figure we use about one and a half Earths worth of resources to support how we live. | The Environment | Kids Discover