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Control measures of New castle disease are;VaccinationMass slaughterPracticing farm hygieneQuarantine
Cultural influences of the cushites on the bantu speakers are;Taboos against fish eatingIntroduction of the art of circumcision
Cultural and Economic practices of the early man during the Middle Stone Age Period are;His occupation was hunting, gathering and fishing.He improved his tools.Lived settled life in rocks and caves.wore animal skins as clothes.made shells and necklaces and painted his body with red ochre and oil.Developed simple language for communication and religious beliefs.
Filtration is the most suitable method to separate crystals of lead(II) carbonate and common salt.
Trawling as a method of fishing is;Trawling involves dragging a cone shaped bad (trawl) over the sea bed behind a boat or trawler.A bag shaped net attached to the ship trawler is dragged along the sea bed to trap the fishThe net is cast into the sea by a trawler.The upper part of the net is kept a float by floats and the bottom held down by weights.Then it is dragged on the sea bottom at low speed.The mouth of the net is kept open by the floats and weights.Fish swim into the net and trapped in.Once enough fish is caught the net is hauled into the trawler and the fish is removed.