The answer would be Biology and Chemistry. Although they do use a little bit of physics, it's mostly chemistry and biology.
Small bones and hair can be found in owl pellets, These things arent digestible thus leading to them being regurgitated whole.
These would be the elements in row 2 the alkaline metals. Elements in a row usually share many qualities such as electon reactivity as well as similar characteristics like the fact that many alkaline metals are considered Cations, ions with positive charges. Some examples are beryllium and calcium.
