Which is an example of a behavioral adaptation?
a. a beaver marks it territory with its scent.
b. an arctic fox has thick fur on its feet for warmth.
c. a hummingbird has a long bill to reach the flower's nectar.
d. an egret has long legs for wading in the mud.

The extermination of an entire targeted population is called genocide

According to ohrp, a problem is an “unanticipated problem” when it meets which of the following criteria: unexpected, related or possibly related to the research, suggests that the research does not put the subjects or others at greater riskunexpected, related or possible related to the research, suggests the research puts subjects or others at greater riskunexpected, unrelated to the research but still occurring with a subject, suggests the research puts others at greater riskexpected, related or possible related to the research, suggests the research puts others at greater risk

Why is it necessary to obey social norms? write briefly.