One example of a very complex land ecosystem , full of thousands of kinds of living what is the answer

Which term refers to a group or community that forms the focal point of a study and consists of all the people considered for evaluation in the research? a. sample b. population c. variable d. mean

Congress checks on the power of the presidency by overriding a presidential reversal or veto. debating the bill in both of the houses. making laws without presidential review. sending the bill back to several committees

The specific department of health and human services (hhs) regulations that apply to research with children are known as: subpart b: additional protections for children involved as subjects in researchsubpart a: the common rulesubpart d: additional protections for children involved as subjects in researchsubpart c: protections for children in research