1.The least amount of energy is available at the ______________ level of an energy pyramid. 2.Approximately what percentage of the energy in the plants.

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Presentation transcript:

1.The least amount of energy is available at the ______________ level of an energy pyramid. 2.Approximately what percentage of the energy in the plants is passed on to the animals that eat them? 3.What do producers release as a result of photosynthesis? A.Carbon dioxideC. Hydrogen B.OxygenD. Nitrogen

 Use the list of organisms provided for each food chain and place these organisms in order according to the flow of energy. Remember to begin with energy coming to Earth. The path should go from the original source to the last organism to use the energy  Hawk  Bunny Rabbit  Sun  Lettuce Sun Lettuce Bunny Rabbit Hawk

 Snake  Cricket  Rat  Seed  Sun  Eagle  Sun seed cricket rat snake Eagle  Cod  Algae  Sun  Krill  Leopard Seal  Killer Whale  Sun algae krill Cod Leopard Seal Killer whale

 Shrubs  Sun  Mountain Lion  Deer  Sun Shrubs Deer Mountain Lion  Sun  Herbivore  Carnivore  Producer  Top Carnivore  Sun Producer Herbivore Carnivore Top Carnivore

 Create wetlands  Install nesting boxes that increase the number and range of wood ducks  Acid rain, damages amphibian eggs  Clear cutting forests reduces squirrel or owl populations  Suburban sprawl reduces mule deer winter range decreasing numbers of deer

 1955 used DDT to kill mosquitoes that carry malaria

 Thatched roofs collapsed because the DDT also killed the wasps that ate thatch-eating caterpillars

 DDT also killed cockroaches which lizards then ate and damaged the lizard’ nervous system making them slow.

 Cats ate the slow lizards  Cats died from DDT affects

 Rats from the forest moved in

 Rats carried fleas that carried the plague

 Had to parachute in healthy cats to control the rats

 Make a food web for the organisms on Borneo

 No longer any reproducing organism of a species on Earth  Examples  Dodo bird  Passenger pigeon  Taking organisms out of the ecosystem is like taking bricks out of a wall; too many and it will collapse.