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Compost: a mixture of various decaying organic substances, as dead leaves or manure, used for fertilizing soil. Aerobic: (of an organism or tissue) requiring the presence of air or free oxygen for life. Anaerobic: non-needing air. Inhospitable: (of a region, an environment, etc) lacking a favorable climate, terrain, etc. Horticulture: the cultivation of a garden, orchard, or nursery; the cultivation of flowers, fruits, vegetables, or ornamental plants.

Humid acids or humus: the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth. Spade: a tool for digging, having an iron blade adapted for pressing into the ground with the foot and a long handle commonly with a grip or crosspiece at the top, and with the blade usually narrower and flatter than that of a shovel. Aeration: to expose to the action or effect of air or to cause air to circulate through. Tilth: the act or operation of tilling land; tillage. Soggy: soaked; thoroughly wet; sodden.damp and heavy, as poorly baked bread.

Peat: a highly organic material found in marshy or damp regions, composed of partially decayed vegetable matter. Lignin: an organic substance that, with cellulose, forms the chief part of woody tissue. Impure matter found in wood pulp. Rotifer: any microscopic animal of the phylum (or class) Rotifera, found in fresh and salt waters, having one or more rings of cilia on the anterior end. Cilia: minute hairlike organelles, identical in structure to flagella, that line the surfaces of certain cells and beat in rhythmic waves, providing locomotion to ciliate protozoans and moving liquids along internal epithelial tissue in animals. Coir: the prepared fiber of the husk of the coconut fruit, used in making rope, matting, etc.

Deplete: to decrease seriously or exhaust the abundance or supply of. Litter: the layer of slightly decomposed organic material on the surface of the floor of the forest. Soluble: capable of being dissolved or liquefied. Inoculate: to implant (a disease agent or antigen) in a person, animal, or plant to produce a disease for study or to stimulate disease resistance. Sludge: sediment deposited during the treatment of sewage. Promulgate: to make known by open declaration; publish; proclaim formally or put into operation (a law, decree of a court, etc.).



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