20 Which natural resource became the chief source of fuel in the Industrial Revolution?
OA.
steam
OB.
coal
OC. peat
OD.
oil
Reset
Next QWstion

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases.protect researchers from disclosing conflicts of interest.prevent subjects from knowing the purpose of a study.protect identifiable research information from compelled disclosure.

Imperial crisis inflation invasion pax romana great schismtrade during the , roman generals warred over succession. these conflicts drew soldiers away from the frontier and made the empire vulnerable to

Why is mary salter ainsworth a central figure in psychology?