 K, dude, life is so fantastic. The next characteristic of living critters is that they grow and reproduce. Really? Yes. And we will spend a healthy chunk of time talking about how critters grow and then how they make more babies. We're going to talk about how cells grow and make more of themselves. Really, growth in an organism is just the increase in a multicellular organism. Growth is an increase in the number of cells that you have. And reproduction is taking one organism and making more than one actual whole organism. Your cells reproduce and make more cells, but reproduction also happens in an organismal level of organization. Growth, something that, I mean, think about this. I'm sorry, we're like doing this summary of the entire course and I'm getting all fired up about all the cool things we get to talk about. If you think about, like, where'd you come from? Do you remember asking your mom that question? Yeah, I've had that conversation multiple times in my household. We all know in my house that you combined the egg with a sperm, yeah, and you got a single-celled zygote. This is a zygote and it's you. That thing right there, that single-celled little you, little cutie pie you, that is going to grow and reproduce and develop over time, that individual, and then it'll turn into a baby that'll come out, then it'll turn into a kid, then it'll turn into a bigger kid and every now and then you got to drop the electronon bomb on the kid to, like, you know, keep him in line and then it grows into, like, a teenager and then you got to do a lot of electronon bombing of the teenager and then pretty soon it's grown up and like goes somewhere else and lives in some other house and then, oh my gosh, then it makes its own little zygote. Dude, I just fast-forwarded my whole life and that's kind of disturbing. So that's awesome and that's indicative that the things are alive. Wow. We're going to study this. We're going to look at heredity and we're going to look at what your babies are going to look like and all these processes, which is awesome. Growth and reproduction happens in an individual. This is different from the change that happens in the next characteristic of life, which is coming up next.