Describe the three classes of flatworms

Flukes: a group of flatworms that are parasitic in nature, often specializing in Frogs, Fish, and Turtles

Planarians: free swimming, predatory freshwater flatworms that can regenerate themselves if cut in half

Tapeworms: parasitic flatworms that live in the intestines of warm blooded animals

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.