Acid Rain Is Less of a Threat to Lakes and Streams

question 48

Multiple Choice

Acid rain is less of a threat to lakes and streams in areas where the bedrock is limestone (CaCO₃) . Which of the following represents a balanced equation for the neutralization of acid by limestone

• A)CaCO₃ + 2OH^- \(\rarr\) Ca(OH)₂ + CO₂
• B)CaCO₃ + 2H₃O⁺ \(\rarr\) Ca²⁺ + CO₂ + 3H₂O
• C)CaCO₃ + H₂O \(\rarr\) Ca + H₂CO₃
• D)CaCO₃ + OH^- \(\rarr\) Ca²⁺ + CO₂ + H₂O
• E)CaCO₃ + 2H₃O⁺ \(\rarr\)Ca²⁺ + CO₂ + 2H₂O

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Definitions:

Sebaceous Gland

A microscopic exocrine gland in the skin that secretes an oily or waxy matter called sebum, to lubricate and waterproof the skin and hair.

Eccrine Gland

Sweat glands found all over the body that help regulate body temperature by releasing sweat.

Apocrine Gland

A type of gland that is mainly responsible for body scent, found in underarms, genital area, and nipples.

Longitudinal Ridges

Vertical lines or grooves that run lengthwise along a surface, common in nails due to aging or health issues.