The branch of medicine concerned with the problems and diseases of the elderly is called

Describe how gravity and convection work together to move the plates in the plate tectonics theory

Rank the following from most to least devasting: ordovician,permaian,cretaceous, pleistocene

The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. this in turn led to the change in diet that included larger amounts of protein. many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. this demonstrates the intimate connection between