Heat always flows from a object to a one.

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

What does it mean for an allele to be dominant?

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?