Can be thought of as semi-autonomous communities with fairly informal leadership, but which have cross-cutting kin groups or associations which allow them to occasionally integrate into a larger unit.

Telling your brain to slow down and focusing on details are crucial activities in which positive study habit?

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality. potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english

Which choice best describes the general trend for the countries shown, for the period 2008 - 2010?