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(B) The term $LC_{50}$ stands for $Lethal \ Concentration \ 50\%$. It is defined as the concentration of a chemical (such as a pesticide) in the envir

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$LC_{50}$

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(B) The term $LC_{50}$ stands for $Lethal \ Concentration \ 50\%$. It is defined as the concentration of a chemical (such as a pesticide) in the environment (like water or air) that is required to kill $50\%$ of the test population of organisms within a specified period of time. $LD_{50}$ refers to $Lethal \ Dose$,which is the amount of a substance administered directly to an organism,whereas $LC_{50}$ refers to the concentration in the surrounding medium.

The concentration of a pesticide required to destroy $50\%$ of a pest population is called:

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