How have people in Utah interacted with the environment?

Define production possibility curve

Which three sentences in the story indicate that that the passage is an ex nihilo type of creation story?

Francine, a college freshman, has agreed to participate in a psychology research study. before she begins her participation, she reads a statement written by the researcher explaining the purpose of the research and the potential risks of participation. it also explains that francine is free to withdraw from the research at any time. in providing francine with this statement, the researcher has followed the ethical guidelines of for participants.