A: he has made observations about the natural world b. justin notices a particular type of caterpillar feeds only on cottonwood trees in his neighborhood. in which way has justin increased his scientific knowledge? he has used technology. c he has performed a practical experiment. d he has performed an unethical experiment.

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