Over Time,dissolved Magnesium Concentration in a Lake Has Reached Equilibrium

question 7

Multiple Choice

Over time,dissolved magnesium concentration in a lake has reached equilibrium.Input is from streams draining into the lake; magnesium is removed by precipitation in lake sediments.If wastewater discharge upstream doubles the rate at which magnesium is delivered to the lake,

• A) The BOD of the lake will double.
• B) The BOD of the lake will be cut in half.
• C) The residence time of magnesium in the lake will double.
• D) The residence time of magnesium in the lake will be halved.

---

Definitions:

Tinea Pedis

A fungal infection of the foot, commonly known as athlete's foot, characterized by itchy, cracked, and peeling skin.

Salicylic Acid

A beta hydroxy acid used in skincare products for its exfoliating properties, and medically for its role in reducing inflammation and treating warts.

Prevention of Amputation

Strategies and medical interventions aimed at avoiding the surgical removal of a limb or part of it.

Diabetes Mellitus

Another term for diabetes, a metabolic disease marked by high blood sugar levels over a prolonged period.