Why were the beavers dropped from airplanes

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

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

The health care system in is referred to as a singleminus−payer health care system, and is a system in which the government provides national health insurance to all residents.