What Will Happen to the Populations of Developed Countries During

question 176

Multiple Choice

What will happen to the populations of developed countries during the next few decades and beyond? They will _____.

• A) increase more than developing countries
• B) remain stable in population
• C) decrease
• D) increase slowly

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Definitions:

Ethyne

A colorless hydrocarbon gas with the formula C2H2, known for its use in welding as acetylene.

Molecular Shape

The three-dimensional configuration of atoms within a molecule, determining many of the properties of the molecule, including reactivity and biological activity.

Phosphine

A toxic, flammable gas composed of phosphorus and hydrogen, used as an insecticide and in various industrial processes.

Lewis Structure

Diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.