food+web

= = Revised and Edited by Mr. D 11/11 = = = =



1. Draw a food chain using the food web above.
Plants-> Squirrels -> Spiders -> Hawks and Owls Producer->Primary->Secondary -> Tertiary

== 2. What would happen to if the MICE in the food web above were eliminated from the ecosystem? Describe the populations directly affected. What would happen to the producers, tertiary consumers, herbivores, etc? ==

3. What would happen if the SPIDERS were eliminated from the food web above?
== If there was decrease in spiders a lot of populations would go down. First, there would be a spike in the population of insects because spiders eat only insects. Also small bird populations would go down because they eat a lot of spiders and hawks, owls, foxes, and snakes. ==

4. What would happen to the food web if the Insectivorous birds were eliminated?
== If there was a decrease in small birds than that would ruin a big part of the food web. It would help increase the insect population and the spiders. It would also help the frogs and toads because of the increase of insects. It would hurt the foxes, owls, hawks and snake population. ==

. Where do decomposers fit into this food web?.
== Decomposers can fit in 3 places. Either at the top. Below the plants or to the side. All the living organisms that die will be eaten by decomposers and the cycle of carbon, nitrogen, and oxygen will continue. ==

6. List four different decomposers that could be found in any ecosystem.

 * == Mold ==
 * == Fungi ==
 * == Worms ==
 * == Sow Bugs ==



Look at the food Web above. Organize the Web into different levels.
== At the botom would be the producers(plants). Next, would be primary consumers (Rabbits, Squirrels,Mice,seed-eating birds and herbivorous insects). Then would be Secondary consumers (Predacious insects, Spiders, Toads, Insectivorous birds). Finally, is the Tertiary consumers (Hawks,Owls,Foxes,Snakes) ==

What would happen to different populations if the Spiders disappeared?
== First the insect population would increase. Also the small birds, larger birds, foxes and snakes would decrease because of the domino effect. Also the toads would increase because of the increase of insects. ==