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A world without predators. It sounds like a safer, happier world, but come on, this is SCIENCE…

We've long known that animal pollination is an important way plants reproduce on land, but we're only JUST finding out animals also pollinate plants underwater.

Community ecology is the study of interactions between different species of living things, and lets ecologists examine the effects of predator-prey relationships, parasites, and mutually beneficial interactions. In this episode of Crash Course Biology, we’ll examine the myriad interspecies interactions with examples, see how keystone species impact their environment and explore how communities rebuild when they are disrupted, through the lens of the 1980 eruption of Mount St. Helens.

Special thanks to the Society for Ecological Restoration and its global partners for their support during this production; and to the Convention on Biological Diversity, which is part of the United Nations Environment Program.

Under the right conditions, wildfires can form clouds and generate firestorms, which last far longer than normal thunderstorms.

Every day billions of soldiers fight a merciless war on thousands of fronts, that has been going on for over one hundred million years: The world war of the ants.