Why might a person whose ancestors came from the Arctic tend to carry more body fat than a person whose ancestors came from the tropics despite similar diets and exercise
Which of these is an example of the abiotic environment
Over a few million years in Africa droughts have often caused grasses and shrubs to die some years while tall trees survived Because of this giraffes with very long necks could feed in the trees w
What idea of Darwin's based on fossils and the modern organisms he found basically says that genetic changes are inherited by later generations
What is the most likely cause of directional selection
The second law of thermodynamics states that in a closed system entropy will increase meaning that complex things should break down into simpler ones Evolutionary theory suggests that living things