The heat needed for chemical reaction to take place is called a. heat of reaction b. activation energy c. friction

How was japans development influenced by its landforms, its climate, and its proximity to china and korea?

The history of ethical regulations in human subjects research began with the: a. declaration of helsinkib. nuremburg codec. common ruled. belmont report

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