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Is understanding animal behavior and this is something that I'm I've always been really fascinated in measure respons es environment and what is some kind of examples to how we understand ecosystem interact with one another but I want you to write down for me please is that when an animal or could be a plant or another organism when it responds to a stimulus that response so like what it does so how it behaves or it could be how it physiologically response what's up breathing more heavily this is blood pressure raise does it release a lot of insulin like those kind of factors are important too but it's response is going to affect its overall Fitness how we measure Fitness the ability to survive and have office spring so if you have a behavior that helps you to survive then that's going to improve your business right or if you have a behavior that decreases you've been chased by predator and stand there and don't do anything that behavior isn't going to decrease your victims right now the one I want you to draw your attention to again if you want to write the example here today I want to show you a video of some prairie dogs a couple of the point is I just want you to do anything about you anybody here ever heard of the honey bee wiggle dance so honey bees I don't know if you know this they communic ate by accident so they'll fly back to a hive when they have found food or they found a good resource that they want to tell the other bees or they're like hey this is really good flowers to communicating information to other bees together but they can also use electrical signals chemical signals all sorts of pieces of information for lots and lots of different reasons so the last thing I want you to write down here today is that natural selection we've been learning about the last unit it's going to favor those responses or those behaviors that increase survival and increase that reproductive success so again if you behave in a way that means you're more likely to survive then you're more likely to pass on your genes and if that behavior is genetic if it's embedded within your DNA and you can pass that behavior on then that's going to increase your chance of surviving right some behaviors are not some behaviors are learned I don't know if you guys know this but there's a word that we use in Zoology and studying animals for a behavior that can be passed between individuals something that becomes like popular we use meme today is obviously very different in terms of social media right that's where the word comes from something that somebody one example do we want you to know about is what they call Choice Chambers and you sometimes say this with even sits and invertebrates in particularly what it is if you have like a little boats where you put the animal into the middle section and then it has two ends where you have to options for it's interest maybe it's type of food maybe it's a night or something like that but essentially the scenario is that that individual that you put into the choice chamber will go to one end or the other or it will just stay put so statistically what you can do with information like that and you could hear about compare is there a significant difference between how many times it chooses of this site compared to how many times it doesn't just remember and null hypothesis is it going to be no difference when you're comparing data groups where is your alternative hypothesis is what you get when you reject the null hypothesis Wednesdays no so there's not no difference and just remember this idea of negative and positive controls when you're setting up an experiment so I guess when we did the lab with the with the piggo bacteria a few weeks ago