Ross goes for 4 days straight with little sleep. He is exploding with energy and acting impulsively. It is likely that he is experiencing periods best described as

The symbols found on the map below indicate where fossils have been found in the same layer of sediment. each unique symbol represents fossil locations of a particular species.

I'm in a few lessons on eastern europe and i need me don't leave me hanging. : {

Francine, a college freshman, has agreed to participate in a psychology research study. before she begins her participation, she reads a statement written by the researcher explaining the purpose of the research and the potential risks of participation. it also explains that francine is free to withdraw from the research at any time. in providing francine with this statement, the researcher has followed the ethical guidelines of for participants.