Dr. kong does a study in which he finds that smoking is correlated to an increased risk of high blood pressure. he publishes his results. then dr. meco does the same study using different participants in another city. dr. meco's work is an example of: question 20 options:

The term for a fertilized egg that has begun cell division but is not yet a fetus is

Identify the constitutional principle that is common in both this excerpt and federalist no. 51. based on the constitutional principle identified in part (a), explain how the perspective in this excerpt compares with the perspective in federalist no. 51. explain how the constitutional principle identified in part (a) is reflected in the constitution, including two examples to explain how it affects the u.s. political system

Which factor contributed to the rise of african empires such as ghana and mali ? a. their creation and involvement in trade networks b. they focused only on agricultural production. c. they didn’t engage in warfare with other nations d. their geographic location protected them from attacks.