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Factors affecting Ecosystems What do all of the following items have in common? Lion, Grass, Alligator, Shrub, Tree, Bacteria -They are all living things Biotic Factors Biotic factors- all living things in an ecosystem. Plants, animals, microorganisms (bacteria) Abiotic Factors Abiotic factors- all non-living things that affect an ecosystem. Water, atmosphere, temperature, rocks, soil, nutrients How can abiotic factors affect an ecosystem? Write a paragraph (at least 4 complete sentences) in your journal. Composting Composting, often described as nature’s way of recycling, is the biological process of decomposing (breaking up) of organic waste such as food waste, manure, leaves, grass trimmings, paper, worms, and coffee grounds, etc., into an extremely useful humus-like substance by various microorganisms including bacteria, fungi and actinomycetes in the presence of oxygen. Today, the use of composting to turn organic wastes into a valuable resource is expanding rapidly in many countries, as landfill space becomes scarce and expensive, and as people become more aware of the impact they have on the environment. Carbon rich material is known as ‘brown’ stuff. Nitrogen rich material is known as ‘green’ stuff. There needs to be a good balance of these two materials to form good quality compost. Too much of either one will result in poor compost. A healthy compost contains a balance of one-quarter green stuff such as: vegetable scraps, coffee grounds, grass clippings or manure—to three-quarters brown stuff such as: leaves, straw, shredded paper, coir fiber, wood pellets, or sawdust. In other words, ¼ green matter to ¾ brown matter. STOP…..DON’T COMPOST THIS Do not put these items in a compost bin because they do not break down: metal, plastic, packing foam, or chemicals found in the home. RECYCLE them in a RECYCLING BIN instead!!! ALSO….NO MEAT, NO DAIRY, NO BONES, GRAVY, FISH, or CHEESE…..they cause an awful smell that attracts animals!!! During composting microorganisms from the soil eat the organic (carbon-containing) decaying waste and break it down into its simplest parts. This produces fiber-rich, carbon-containing humus with other nutrients like nitrogen, phosphorus and potassium. Through the respiration process, the micro-organisms give off carbon dioxide and heat. The more heat generated, the faster the decomposition occurs. During the composting cycle, the contents need to be mixed approximately weekly. Composting & Decomposition Compost is a soil conditioner, mulch and fertilizer all wrapped into one. It benefits the environment as a natural fertilizer for gardening and farming. Composting https://app.discoveryeducation.com/learn/video s/b42e9ab3-5230-470b-87bb-d5f040701292?h asLocalHost=false