Separation of oxygenated and deoxygenated blood in fish?​

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

What was photo 51 with rosalind franklin?

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?