WGU C451/GNC2/1NC1 Integrated Natural Sciences Module 8 Correct 100%

Explain the concept of natural selection. - ANSWERSIt is a process where organisms with advantageous traits leave more offspring than organisms with other traits - causing populations to change over time. (key mechanism of evolution) variation - ANSWERStraits vary from individual to individual heritable traits - ANSWERSA trait that can be passed on genetically from parent to offspring. fitness - ANSWERSthe number of offspring an organism leaves over its lifetime compared to other individuals in the population Describe an example of a population that changes over time due to natural selection. How do variation, heritable traits, fitness and natural selection allow change in the population to occur? - ANSWERSpeppered moth, rat snake, humans, deer mouse, pesticide resistant insects, Galapagos finches, peacocks, warrior ants, nylon-eating bacteria, and lizards. (They have all adapted & made changes to support the environments they live in) Explain why adaptations are an important component of a species' survival. - ANSWERSbecause they are important for survival. If the specie does not adapt to its environment it lives in, it will not survive Describe adaptations of animals in extreme environments, such as a polar bear (in a cold, arctic environment) or - ANSWERSPolar Bear (cold- arctic environment): larger, tend to have a smaller surface area-to-volume ratio, their volume inc