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If you mean do people evolve from monkeys or other animals, the answer is NO. However, people a hundred years ago were shorter and unhealthy. Due to better diets, hospitals, and knowledge of germs and diseases, (NOT evolution) we are WAY healthier.

Answer:

Of course we can. As a simple demonstration of that fact that you can have a milk shake or cheese sandwich is due to evolution.

People evolve in response to stresses on the species. Those who can't survive don't live to pass their ability on to their descendants. This is the basis of evolution. A recent example is the ability of some humans to digest milk while others cannot do this. This was in response to a need to use an available food source (cow's milk) during some lean period in our history. Those people alive at that time couldn't make use of this food, those with the necessary mutation could. We survived the others starved. In some areas (such as Asia) the need for this alternate food did not arise and the mutation never became widespread as it offered no advantage.

The ability to digest milk in adulthood, conferred by genetic changes occurred as recently as 3,000 years ago. Interestingly enough it happened independently in both Europe and Africa due to similar pressures.

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