Biology
Biology, 17.09.2019 03:00, kyleescott9525

How can the fish eating bird have 5 ppm of ddt when the water only started with 0.003ppmm of ddt

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Biology, 24.06.2019 04:00, kgflol5692
Based on the hypothesis that ddt was causing a decline in fish-eating bird populations in the united states, a group of scientists predicted that the amount of ddt in bird eggs was correlated with the thickness of the egg shells. for their experiment, they planned to visit a number of fish-eating bird populations and take 1 egg from 70 nests. in the laboratory, they would open the eggs to measure the concentration of chemicals such as ddt. they would also measure the thickness of the egg shells. the researchers had to decide which species of birds they would use in their study. choosing the proper study organisms is very important because the species must be appropriate for the experiment, and practical to work with.
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Physics, 24.07.2019 14:10, 21hendlill
2. a bird is flying with a speed of 18.0 m/s over water when it accidentally drops a 2.00 kg fish. if the altitude of the bird is 5.40 m and friction is disregarded, what is the speed of the fish when it hits the water?
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Biology, 31.07.2019 03:30, cakey3501
Taiben went on a walk in the forest. he saw a deer grazing in the grass, a bird eating a berry, a fish swimming in a creek, and a fox catching a rabbit. is an action that has both a biotic and an abiotic component involved. is an action that involves only biotic components. a. a fish swimming in a creek; a bird eating a berry b. a bird eating a berry; a deer grazing in the grass c. a deer grazing in the grass; a fox catching a rabbit d. a fox catching a rabbit; a fish swimming in a creek
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How can the fish eating bird have 5 ppm of ddt when the water only started with 0.003ppmm of ddt...

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