How do multi-cellular organisms develop?
a.
cell differentiation - start from a single cell and as the cells divide they become specialized
b.
they all start as skin cells
c.
organisms have the same number of cells all the time.

Solutions to environmental problems in europe must

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

In the figure below, which letter points to the structure through which water is lost during transpiration?