Tree An area of woodland composed primarily of trees established by planting or artificial seeding is known as a plantation. Trees are the source of many of the world's best known fleshy fruits. Apples, pears, plums, cherries and citrus are all grown commercially in temperate climates and a wide range of edible fruits are found in the tropics. Other commercially important fruit include dates, figs and olives. Palm oil is obtained from the fruits of the oil palm ("Elaeis guineensis"). The fruits of the cocoa tree ("Theobroma cacao") are used to make cocoa and chocolate and the berries of coffee trees,
Midge greatly from species to species, though within any particular family, midges commonly have similar ecological roles. One type of midge "ceratopogonid midges" (a type of fly in the family Dipteran) is a major pollinator of "Theobroma cacao" (cocoa tree) because of its unique morphological and behavioral characteristics. Having natural pollinators has beneficial effects in both agricultural and biological production because it increases "Theobroma cacao" crop yield and also density of predators of the midges (still beneficial to all parties). Examples of families that include species of midges include: The Ceratopogonidae (biting midges) include serious blood-sucking pests, feeding both on humans