Answer:
Circulatory
Explanation:
The heart helps pump the blood that travels to the rest of the body. The blood carries oxygen that is needed to travel around the body.
<span>Testing for intelligence at multiple ages at one point in time is cross-sectional research. The goal of this type of research is to provide data on the whole population under study. This type of study is less costly than other forms of study.</span>
Answer:
The Framers chose federalism as a way of government because they believed that governmental power inevitably poses a threat to individual liberty, the exercise of governmental power must be restrained, and that to divide governmental power is to prevent its abuse.
Explanation: