Why was the creation of the two reservoirs in Tikal necessary?
A
because the rainforest was a place that was
always wet and had an excess amount of
water
B
because it had an important spring teeming
with water that needed to be collected and
stored
C
because the Maya had just invented a system
for retrieving groundwater from below
D
because the city got little rain for half the year
and there were no year-round lakes or rivers

Astudy that involves interviews of adults is eligible for expedited review. the researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. no additional changes are planned. which of the following statements about review of the revised protocol is accurate? the research would only be eligible for expedited review if the adolescents are capable of understanding the same consent forms used for the adult population.the research would only be eligible for expedited review if the adolescents have been declared to be emancipated minors.the new research would need full review by a convened irb because children are a protected population.unless the nature of the questions would raise the level of risk to > minimal for adolescents, the research would still qualify for expedited review.

Census data is an example of: public information. private behavior. private information. public behavior.

Which are components pf a political party? why do we need political parties give reason.