After how many minutes of watching video monitors does the attention of most people fall to below acceptable levels?

According to subpart d, research with children may be eligible for exemption when: the children will be asked to complete a surveythe research involves the use of educational teststhe children will be interviewed by the researcher. the research with children will involve participant observation with researcher interaction.

Spanish for "estate," this was a type of plantation or other economic activity in spain's "new world" colonies.

Which of the following is an executive check on the powers of the judicial branch of government? a. presides over senate during hearing to impeach the president b. enforces term limits for supreme court justices c. nominates supreme court justices and federal judges d. casts tie-breaking vote if the supreme court cannot reach a verdict