When building in a swampy or marshy area, it is usually necessary to drain the swamp before starting to build. while this is good for people, it may not be for animals that were living in the swamp. why?

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.