A treatment for ingrown nails is to remove the nails and apply a chemical such a phenol to the cells of the nail

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?

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

What pattern of migration do whales follow?