The burning of oil and coal in Europe has been a major source of:

Which principle underlies the idea of limited govemment?

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

The principle that the geoglical processes that we see today have occurred through out earths history is called