For example, bees are vital to our economy – they pollinate many of our crops such as strawberries and apples as well as animal fodder crops such as clover.
Er enghraifft, mae gwenyn yn hanfodol i'n heconomi – maen nhw peillio llawer o'n cnydau fel mefus ac afalau, yn ogystal â chnydau porthiant anifeiliaid megis meillion.