The Size of the Hypoxic Dead Zone in the Gulf

question 66

Multiple Choice

The size of the hypoxic dead zone in the Gulf of Mexico appears to vary annually in response to all of the following except

• A) annual fish catch.
• B) annual rainfall.
• C) the amount of fertilizer used.
• D) periods of drought.

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Definitions:

Sp² Hybridized

Describes an atom that has three hybrid orbitals formed by the mixing of one s orbital and two p orbitals, often found in planar structures.

Carbon Atoms

The chemical elements that serve as the fundamental building blocks of all organic molecules, characterized by having four electrons available to form covalent chemical bonds.

Hybridization

A concept in chemistry where atomic orbitals mix to form new hybrid orbitals, which can explain molecular geometry and bonding properties.

Oxygen

A chemical element with symbol O, essential for respiration in many organisms and known for its high electronegativity and ability to form oxides.