How energy moves through an ecosystem can be represented by... A. Food chain

B. Food web

C. Energy pyramids

D. All the above

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. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

How do living things obtain phosphorus