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 dioxide C. Hydrogen B. Oxygen D. Nitrogen
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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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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 dioxide C. HydrogenB. Oxygen D. 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.