In what way was dr. j. craig venter a leader in the field of medical research? a. he combined research with dr. francis collins to map the human genome. b. he volunteered his time to operate on children with birth defects in third world countries. c. he opened up a clinic for pediatric neurosurgery. d. he raised money for hiv/aids research.

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a.creating terraces for farm fieldsb.practicing religious ceremoniesc.playing a ball game with stone hoopsd.protecting a city from invading armies

Which of the following scenarios best shows the relationship between personal and civic responsibility? tara stays home on friday night to babysit her sister instead of going to a movie with her friends. theo asks neighbors to sign a petition asking the city council to lower the speed limit in their neighborhood to make it safer for children. natalie watches a presidential debate with her parents in order to complete a homework assignment for school. nick’s scout troop adopts a section of highway in their community to keep free from litter.

What change took place in the african slave trade in the 1500's?