If there are no differences between amino acid sequences in cytochrome c protein of human beings and chimpanzees, why aren’t we the same species?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Describe how alleles and genes are related