Which of the Following Is True of Observational Research

question 26

Multiple Choice

Which of the following is true of observational research?

• A)if done carefully, cause and effect conclusions can be drawn
• B)subject reactivity is seldom a problem
• C)results can support a theory, but cannot serve to raise questions about a theory
• D)the descriptive information can provide hypotheses for more controlled studies

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Definitions:

Nonpoint Source

Pollution originating from diffuse areas rather than identifiable, discrete sources.

Logged Area

A region where trees have been cut down for timber or forestry purposes, often leading to changes in the ecosystem.

Sewage Treatment

The process of removing contaminants from wastewater, primarily from household sewage, to produce an environmentally safe fluid waste stream and a solid waste suitable for disposal or reuse.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.