Because all animals that exist have formed, and are being formed and re-formed, continuously, primarily by natural selection.
evolution by natural selection
Natural Selection is any trait that helps you live. So adaptation is important b/c it helps you live. Take moths for an example, if they don't blend into their surroundings, then they will get eaten by a predator. Adaptations help the animals live, thats why its important to natural selection. Hope this helps! ~Bubbles<3
Animals change and adapt through evolution by natural selection.
yes they are
Natural selection
Without genetic diversity, natural selection cannot occur
Genetic variation is important for natural selection to drive evolution because it provides the raw material for natural selection to act upon. Without genetic variation, there would be no diversity in traits for natural selection to favor or eliminate, and evolution would not be possible.
Yes, penguins, like all animals, have gone through natural selection. Scientific evidence supports this notion.
All animals, including Homo sapiens, did and do.
Sure, mutation would be one way.
No, all life evolves. Bacteria evolve, viruses evolve, protists evolve, plants evolve, fungi evolve and animals evolve. Evolution is driven by Natural Selection. So, no. The evolution of all life on Earth is driven by Natural Selection: all bacteria, plants, animals, mammals, fish, insects, biochemical pathways, behaviours et cetera evolve by Natural Selection.
Variations within a population