Complete the text with suitable prepositions: —

Trees are very useful (a) _____ man. They are highly essential (b) _____ our existencE- They protect the rich top soil (c) _____ getting washed away (d) _____ rain water and floods. We can see trees being grown along the mountain slopes, (e) _____ the road sides, (f) _____ the parks and gardens. They add beauty (g) _____ our lives. They provide us (h) _____ food, wood, shade, shelter and so on. They take (i) _____ carbon di-oxide and produce oxygen. So we should take care (j) _____ trees.