Identify the Type of Observational Study Used

question 4

Multiple Choice

Identify the type of observational study used. A town obtains current employment data by polling 10,000 of its citizens this month.

• A) Prospective
• B) Retrospective
• C) Cross-sectional
• D) None of these

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Definitions:

Ozone Destroyers

Substances known to cause the degradation of the ozone layer, which protects the Earth from harmful ultraviolet radiation.

UV Radiation

Ultraviolet (UV) radiation is a form of electromagnetic energy emitted by the sun and artificial sources, known for its ability to damage skin and cause cancer.

Ozone Layer

Upper atmospheric layer with a high concentration of ozone (O3) that prevents much ultraviolet radiation from reaching Earth’s surface.

Invasive Species

Non-native species that spread rapidly in new environments, often causing harm to native populations and ecosystems.