What causes the subduction zone when an oceanic plate collides with a continental plate? Continental plates are more dense than oceanic plates so the continental plate dives under the oceanic plate
Oceanic plates are more dense than continental plates so the oceanic plate dives under the continental plate
Continental plates are more dense than oceanic plates causing the oceanic plate to push upward
When the continental plates collide the force is so great that it causes the surrounding crust to collapse

Why do you think the soviet union opposed the marshall plan?

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

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