Dieldrin was a chlorinated hydrocarbon insecticide that was remarkably useful against termites because it did not seem to degrade when applied to wood. What issue would you expect with its use?
A) biological magnification
B) expressive toxicity
C) chlorination
D) decomposition
A
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Harmful mutations are always quickly weeded out of a population
A. true B. false
Phosphorus deficiency often appears early in plant growth and results in stunting. Which of the following are reasons why a deficiency in phosphorus would cause growth abnormalities in plants? (Check all that apply.)
_____ Phosphorus is required for the storage and transfer of energy. _____ Phosphorus is required for the production of amino acids that form proteins. _____ Phosphorus is required for DNA replication. _____ Phosphorus is necessary for building moleculesin the cell membrane. _____ Without phosphorus, cellular replication is impeded. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the phosphorus cycle? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following is a mismatch between a
urinalysis result and its possible cause? a. acidic urine; metabolic problem b. alkaline urine; bacterial infection c. excess protein; kidney disease d. excess solutes; diabetes insipidus e. glucose in urine; diabetes mellitus
The chordate nerve cord is hollow and located ventrally
____________________ Indicate whether the statement is true or false.