What is the legal duties​

An atom of element a has 73 protons. what would the element's atomic number be?

The graph shows a student’s data from an investigation about plant growth in five plants of the same type.

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.