Plants make food through photosynthesis, a chemical reaction.

What are the starting substances of the reaction?

oxygen, solar energy, and water

carbon dioxide, solar energy, and oxygen

hydrogen, oxygen, and carbon

carbon dioxide, water, and solar energy

carbon dioxide, water , and solar energy

Explanation: you need carbon dioxide to create what we breathe oxygen and plants need water and sunlight to grow and produce oxygen and glucose (sugar)

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.