Blood vessels are more than just a series of tubes; different types of blood vessels have different structures that help in their function. a. True
b. False

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

The chemical form of energy that is useable by the cell to do work

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material