Models need to be changed when
a. they are based on experimental data
b. scientific understanding changes
c. they represent a phenomenon
d. they are designed to answer a question

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.

The difference between the lower class limits of adjacent classes provides the

In a the people elect the legislature, and the legislature chooses the head of government. question 5 options: parliamentary democracy communist state presidential democracy autocratic state