# Assignment: Calculate the Bioaccumulation of The Substance in Your Energy Pyramid Questions – Essay Furious

Assignment: Calculate the Bioaccumulation of The Substance in Your Energy Pyramid Questions

Pyramid Scheme is: Background: In the 1960’s, environmentalists noticed a frightening die-off of bald eagles and osprey. It was believed and later proven to be caused by the insecicide DDT (dichlorodiethyltrichloryleihane). DDT was banned in 1973 in the United States and the numbers of bald eagles and osprey have since increased. Linking the use of which they are naturally found but also the specific organisms in the food chain that inese predators fed upon. in Following this food chain backwards led to a common substance, DDT, which was found to have permeated each level in the chain. Understanding why smaller organisms lower in the food chain might have survived this toxin while their predators were becoming extinct is explained more easily by studying a Pyramid scheme and measuring the amounts of a specific toxin that has accumulated at each level. This acivity seeks to highlight just this type of Occurence. Introduction: Bioaccumulation is the accumulation of a substance in a biological issue. Organisms at any trophic level may be capable of bioaccumulation. Biomagnification is the increasing concentation of a substance up a food chain from one trophic level to the next. Whenever any kind of substance is released into the air, it’eventually seiües on plants. The plants will be consumed by insect herbivores, the primary consumer. When a primary consumer is eaten by a secondary consumer, the secondary consumer is eating the accumulated poison of its prey. The increasing concentraiion of a subsiance up a food chain from one trophic level to the next is called biomagnification. Whenever herbicides or insecticides are sprayed on grass, for example, those poisons are ingested by the animals eating the grass. Because the poisons are fat soluble, they stay stored in the animals faſty tissue. Procedure: doy Grass -4. Teriary 157 chevolins Consumers . 3.

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Secondary (mag suolyong ហឬនៅ Consumers mga oba) http://64.233.161.104/search?q=cache:m_BVLTIC2fcJ:www.pubinfo.vcu.edu/secretsofthe… 12:49 PM Thu May 7 16% 0 s3.us-east-1.amazonaws.com c + 2. Primary merla. Sin juobash robus Consumers odobne b. Tlo-sib gnist. Changes TO fyrisiborolisi 1. Producers Ons bevated Tasuta 1. Create an energy (trophic level) pyramid. The bottom of the pyramid (producers) begins with grass. Your its second level (a primary consumer) must eat grass. Your topmost level should be your top predator (teruary consumer). You can end either on the third or fourth level.

Assignment Calculate the Bioaccumulation of The Substance in Your Energy Pyramid Questions

Taba Pombas si tonike to aqui ait : Idol is also avant :;; umusos ant bal isega dans Some 2. Select from ihe following to complete your pyramid.edue sto samas odafonsola distasold to sidegso ed yet of leaton soti nana boats ou . Sono ga Saani vnosti Hawk Robin Rabbit Grasshopper Frog Snake Caterpillar Preying Mantis Analysis 1. Suppose the grass that is eaten has been recently sprayed with a pesticide, herbicide or bioterrorism substance. How will ihat substance get concentrated in an energy pyramid? 2. Calculate the bioaccumulation of the substance in your energy pyramid. Your results will be based on what is eaten in just one day. Each blade of grass contains .00003 ppm (parts per million) of a toxic substance. You will need to estimate how much grass your primary consumer eats in one day. Note: Part of the fun of this activity is to think about how much ihese organisms actually eat in a day. If you want to verify your estimates, you might try using a search engine and the Intemet… good luck. eats blades of grass per day x.00003 ppm = ppm. (Primary consumer) (Enter an estimate) eats per day x ppm = ppm. (Secondary consumer) (Enter # of primary consumers) (Enter previous ppm) eats per day x ppm = ppm. http://64.233.161.104/search?q=cache:m_BVĒT1C2fcJ:www.pubinfo.vcu.edu/secretsofthe… 12:49 PM Thu May 7 16% 0 m s3.us-east-1.amazonaws.com c + 1 of 1 (Tertiary consumer) (Enter # of secondary consumers) (Enter previous ppm) 3. Answer the following questions: à. What was the amount of the substance in your top predator? b.

Compare this amount at the top of the pyramid with that at the bottom. Calculate the number of times the substance was magnified. c. Fill in the following sentences for each of the organisms in your pyramid. The has times more toxic substance than the grass. The has times more toxic substance ihan the grass. The has times more toxic substance than the grass. 4. Use your energy (trophic level) pyramid to explain the concept of biomagnification. Additional Resources Because Web sites frequently change, some of these resources may no longer be available. Use a search engine and related key words to locate new Web sites. http://users.scn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html An advanced primer on food chains and trophic levels. http://www.marietta.edu/~mcshaifd/lead/trophic.pdf http://64.233.161.104/search?q=cache:m BVhTic2fcJ:www.pubinfo.vcu.exiu/sectetsofthe.

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