Which of the Following Is an Example of Natural Selection

Multiple Choice

Which of the following is an example of natural selection?

A) depending on the food a turtle eats,it shell may grow faster or slower
B) human beings develop freckles from being out in the sun
C) sometime during human's life they break a bone and it heals
D) a bird's beak is able to effectively crack the seeds it encounters
E) bacteria can be effectively killed by treatment with bleach