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22. State the reason why a cuble unit of hi bie un) 24. Give one way in which rusting is important to the environment. 28, State any one way in which planting of trees alongside other crops 29, Give one reason why we should regularly wash our hands with lean 26, Mention any one activity 4 Schoo! Health Club can do to improve the Improves the quality of soi 23, Sate one vay wi pascig mend of rag cate ps to 25, Name the element of Primary Health Care which promotes the human ‘break the life cycle of pests on a farm, ee — ‘water and soap, 30, Mention one way jn which the antennae of insects are similar to the 27, State the property of air used in fling balloons. body cleanliness, human skin in terms of function, ‘health of people in school. Bie toe hy ‘woo! Weighs less than a cubic unit