The Dose-Response Curve for Arsenic

question 50

Multiple Choice

The dose-response curve for arsenic

• A) Shows no benefit to low concentrations and great harm from high concentrations.
• B) Shows that arsenic is beneficial to humans when consumed in low quantities, but toxic at high quantities.
• C) Was a major factor in setting the new, lower drinking-water standard for dissolved arsenic of 10 ppb in public water supplies.
• D) Shows that microorganisms can be very helpful in decontaminating a site with high arsenic levels.

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