ENERGY PROFILE - THE WETLANDS OF VENICE

Algae and other plants produce their own food from the sun's energy (Trustees of the Stevens Institute of Technology, 1999).
First level consumers, such as black fly and mayfly larvae and snails, eat the plants and algae (Trustees of the Stevens Institute of Technology, 1999).
Second level consumers, such as fish, eat the plant eaters (Trustees of the Stevens Institute of Technology, 1999).
Third level consumers, such as birds, eat the second level consumers (Trustees of the Stevens Institute of Technology, 1999).

Picture and information courtesy of students.ed.uiuc.edu