Complete the text with suitable prepositions: Camels are one of the few animals that can live in a desert. Camels have humps (a) —— their backs. They store fat (b) ——— these humps. The fat gives them energy. Because camels do not store water, fat helps produce water when camel move (c) ——— the dry desert. They can go (d) ———— several months without water. Camels eat grass to get moisture. The camels are as useful (e) ———— the people of the desert as the buffalo are (f)———— the grasslands. The meat of the camel is good to eat. People make cloth (g) ———— of camel hair. Shoes are made (h) ———— the hides. The camels are also good (i) ————— travel in the desert. Some people travel the desert (j)————— camels to make a living.