Why is e-waste (electronic waste) considered to be hazardous?

A. E-waste is a common source of air pollution.
B. Many sources of e-waste leach heavy metals like lead (Pb) into the environment.
C. E-waste makes up about half of the waste in the Great Pacific Garbage Patch.
D. E-waste is most commonly found at Superfund sites.
E. Lead (Pb) measured in leachate from e-waste was found to be below regulatory levels.


Ans: B. Many sources of e-waste leach heavy metals like lead (Pb) into the environment.

Biology & Microbiology

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Answer the following statements true (T) or false (F)

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Nutrients pass through this

a. A b. B c. C d. D e. E

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Creating transgenic animal models for human disease research allows scientists to study new drugs and treatments in animals such as mice, before giving these drugs to humans

a. True b. False Indicate whether the statement is true or false

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The sea squirts and lancelets have an inner chamber that expels water. This chamber is called the

a. intestine. b. bladder. c. atrium. d. nephridium.

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