Where do most minerals occur in nature?

What would happen to the tides if there was no moon and no sun in the sky?

What was different about warfare in the early 1800s and early 1900s?

According to subpart d, research with children may be eligible for exemption when: the children will be asked to complete a surveythe research involves the use of educational teststhe children will be interviewed by the researcher.the research with children will involve participant observation with researcher interaction.