The most harmful by-product of nuclear energy is:
acid rain
sulfur dioxide
carbon dioxide
radioactive waste

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Diffusion and osmosis are forms of passive transport

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