What is the difference between an animal that has symmetry and one that is asymmetrical

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

What is the difference between an igneous, sedimentary and metamorphic rock

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection