FOOD CHAINS/WEBS

FOOD CHAINS

deer <---- berries <---- sunlight

      consumer       producer      photosynthesis   

The berry plant collects sunlight and water to grow. Eventually, a deer looking for food comes along, and happily eat the sweet berries. 

          lion <---- gazelle <---- grass

          secondary       primary           producer

The gazelle is happily chomping on the grass. Nearby, a lion is prowling along, waiting for a chance to pounce on the gazelle. When the gazelle leans down to eat some more, the lion takes this chance, and catches its prey. 

hawk <---- snake <---- mouse <---- corn
   tertiary          secondary        primary         producer

The well-kept corn field's crops are ripe enough to eat, and many field mice scamper through it to find corn without being caught. Nearby, a snake lurks, waiting for the mouse it's watching to move to an angle where it cannot detect it. When accomplished, the snake moves in to strike. It swallows the mouse whole, then rests under a tree, unaware of the hungry hawk watching it intently up in the tree. The hawk swoops down and catches the snake as it flies away.

human <---- trout <---- dragonfly <---- phytoplankton 

                                        tertiary         secondary           primary                    producer 

 A dragonfly flies around a riverbank, and lands near the water, and finds some plankton to eat. As it flies low to the river, a hungry trout leaps up and swallows it. Later, the trout is caught downstream with others in a net. The fisherman sells the fish at the local supermarket, and people buy it, and eat it for dinner! 

This picture is a pyramid of which animals are the
  main predators, producers, and other consumers. 

This picture is of a natural food web

in the deciduous forest, including

bobcats, ravens, and pikas.