Suppose you use a microscope
to look at a tiny worm. What characteristics
would you look for to classify it?

I would look for body structure, what it eats, and how it feeds, and the circulatory system.

Explanation:

Flatworms have a digestive system with only a single opening. They ingest food through the feeding tube, and also the undigested food exits through the feeding tube as well.

Roundworms and segmented worms have a tube-like digestive system that has two openings. Food enters through the mouth and waste exits through the anus.

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the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation: