Count the number of balls in the water, leading to 250 trays which contain water, 1000 ml, contains a total of 12 trays for use in experiments with 3 types of dishes. Experimental type 4 repeatedly
250 The number of larvae to feed on the feed tray, which contained a total of 1000 ml of 12 trays for use in experiments with three kinds of food. The experiment was repeated four types of
Count the number of larvae 250, cultured in the tray feed which water contained 1000 ml total 12 tray for use in experiments with food 3 type. Experiment of each type 4 replications.