Question 7: The cause of natural selection Question 8: Natural selection's impact on penguins

Question: 7. Natural selection is a theory that states that those individuals who are best adapted to live in an area will survive and reproduce. Some organisms in a population are faster, more colorful, bigger, or smarter than others in their species. Individual traits sometimes are helpful, neutral, or harmful. Natural selection naturally results from ____________________. A.organisms actively trying to adapt to environmental changes. B.organisms that have expressed traits that are more colorful. C.mutations in DNA codons that create adaptations. D.genetic variation in a population. 8. A wildlife biologist is studying a population of penguins at the South Pole. These penguins are endangered by global warming and the destruction of their habitat. How will natural selection produce change in the penguins? A. Natural selection will act upon each penguin individually to produce advantageous changes within one generation. B. Natural selection will only act upon the penguins with harmful traits and produce increasingly disadvantageous changes over several generations. C. Natural selection will only act upon the penguins with advantageous traits and produce increasingly disadvantageous changes within two generations. D. Natural selection will act upon the entire population of penguins to produce advantageous changes over several generations.