The 4 classes of biological macromolecules are carbohydrates, lipids, proteins and nucleic acids.
Explanation:
I think because it can make her weak and sick
I'm not sure but I think it is right
hope this helps :)
Answer:
Explanation:
In open systems, hemolymph is not contained in vessels and instead surrounds tissues and organs. In an earthworm's circulatory system, blood is contained within vessels (dorsal, ventral, and lateral), which categorizes it as a closed system.
