Knight used natural differences among ponds in the university of florida's ordway-swisher biological station to create a unique field experiment. she selected 8 ponds that were similar in size and depth. four of the ponds contained fish, but the other four contained no fish

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. show the flow of energy in the following ecosystem by labeling each organism's link in the food chain. click once to select a label. click again to place the label in the correct location.