Which of these lists has only products that come from plants?
A: Paper, spices, and fibers

A scientist needs to take a picture of the well-ordered arrangements of the atoms and molecules within a substance. Which of the following instruments would be best for the scientist to use?
A: an electron microscope.

In the human body, cellular respiration breaks down sugar molecules after they enter the cell. What results from this process?
A: release of energy

A scientist plans to investigate the nervous system of sea slugs. What should the scientist do first?
A:
Review the research other scientists have done on sea slugs.