3. Compare and contrast the differences in characteristics between K – selected and r-selected species.
K-selected species are species that have adapted to live in stable environments and have a low reproductive rate. They tend to have a longer life span, larger body size, and a slower growth rate. They also tend to have fewer offspring, but invest more energy into each offspring. Examples of K-selected species include humans, elephants, and whales.
R-selected species are species that have adapted to live in unstable environments and have a high reproductive rate. They tend to have a shorter life span, smaller body size, and a faster growth rate. They also tend to have more offspring, but invest less energy into each offspring. Examples of R-selected species include insects, rodents, and some fish.