quitzlet A researcher uses a video camera to record children as they play on a school playground. The researcher plans to carefully watch the videotape to count the children's helping behaviors. This researcher is conducting a: case study systematic observation. standardized test. multisource study.

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

Which argument for religious reform might be convincing to a priest, pope, or king?

What form of government did argos have