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To keep the body warm, hair is raised trapping air between hair and the body, air is a bad conductor of heat hence insulates the body against heat loss.
Methods usually used by computer programmer to test a program areDesk checking involves going through the program while on paper before entering it in the program editor window.Using debugging facilities these are utilities provided by the programming language that assist programmer in detecting syntax error.Use test data this involves carrying out a trial run on the new program using a set of test data to check weather the system will give out the desired output when fed with the correct data.
Methods used by British to acquire colonies in Africa are;Signing of treatiesMilitary conquest/forceCompany rule Diplomacy/collaborationTreachery/trickeryDivide and rule/playing off communities against each other.Enticing/luring of chiefs with gifts e.g with clothes and weapons.Construction of operation bases/transport networks.
Conditions are necessary for a body to be in equilibrium include;Sum of clockwise moment = sum of anticlockwise momentSum of upward forces = sum of downward forcesResultant force is zero
Methods used to prevent rusting include;GalvanizationElectroplatingPainting surfacesOiling/greasing