which of the following best explains why it is important to protect rivers? a) without them, animals in marine ecosystems would become overpopulated. b) we depend on them to meet our basic needs by providing drinking water. c) without them, we would lose money made through overseas trade. d) we depend on them to provide us with our main source of food.

Which of the following statements most accurately describes the requirement for the documentation of minors’ assent to participate in research? parents must approve written documentation.documentation is required unless waived by an irb.to protect minors documentation is always required.federal regulations do not require the documentation of minors’ assent.