A scientist constructs a graph to show the age structure of the human population of Country Y. The graph is shown here.

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

These are the components of the reservoirs of carbon that are exchanged in our environment.

For an animal living a diplontic cycle, meiosis is limited to: producing gametes producing growth fertilization development of the zygote