Plants do not produce as much waste products as animals. As a result, the excretion of these wastes is much easier. Plants use sunlight, water, and carbon dioxide to produce carbohydrates. Oxidation of carbohydrates is accompanied by the production of water and carbon dioxide that is rapidly released in the gaseous form from leaves without a need in any specific mechanisms. Plants take other chemical elements in the form of inorganic compounds - ions and minerals (i.e., nitrogen in the form of ammonia, etc.). As a result, plants directly use these elements for the production of amino acids, proteins, nucleotides, and nucleic acids and do not need to break down other organic molecules containing nitrogenous compounds. As a result, they do not produce as much waste products like animals who eath plant- and animal-derived food containing complex bioorganic compounds. Ther breakdown is accompanied by the production of high amounts of wastes. On the other hand, as the metabolism of plants is more simple, they do not need much energy and heat. Overall, plants use more simple compounds that do not require digestion and production of wastes. Next, plants use the compounds more efficiently using organic and inorganic substances in various forms. Finally, waste products (carbon dioxide and water) can be easily removed from the plant or can be used in photosynthesis, whereas other substances can be removed from the roots by simple diffusion into the soil where these substances are degraded by various microorganisms.