text: explain what is meant by r and k selection? and give an example of and r-selected species (an "r" strategist), and a k-selected species (a "k strategist"). why is the k capatalized but the "r" isn't? i'm not sure about the capitalization, but the selection refers to populational growth. in r-selected populations (such as turtles), many of the offspring die, so females give birth to a huge amount of offspring at once, and generation time is very short. in k-selected populations (such as humans or cows), generation time is very long, and very few offspring are produced and lots of time and energy are invested into taking care of them.