In this video he talked about Niche. It depends on where you live, some people call it a niche. Some people pronounce it differently. It is derived from a french word which simply means nest. And so a good way to think about a niche is basically your role in an environment. He pointed at a spot on the video and described them as a couple of niches being exploited. There is a rock that he pointed at and he said that there are niches growing on the rock. You can actually see four species. Because did you know that lichen is not one species. It is actually a symbiotic relationship between an algae and a fungus. And they can't live by themselves. You can see the green lichen, but you can also see the orange lichen growing. They are both exploiting a …show more content…
And that just came from the top of this mountain as it exploded. That would be primary succession because there was no soil left. In this video he talked about coevolution. Coevolution is essentially when two species head down an evolutionary pathway together. And so insects and flowers are a great example of that. So like a bee taking nectar from the flower. In return it's transferring some of this pollen down here to another flower. So the insect gets an advantage from that. And the flower also gets an advantage from that. And it's worked so well that half of all animals on the planet aren't only insects but are beetles which are a specific type of insect. So insects have done very well. And flowering plants have done very well as well. So angiosperms or flowering plants make up most of the plants that you see. Like grass, big maple trees, those are all angiosperms. So they both have benefitted from this mutualistic relationship. And that is coevolution. In this video he talked about r and K selection. Or r selected and K selected species. Right here we have a chameleon female that just laid two eggs. Right here we have a frog that's just laid thousands of