Reverse Osmosis

question 38

Multiple Choice

Reverse osmosis

• A) is used to replenish the oxygen content of bodies of water.
• B) causes dead zones off the mouths of rivers.
• C) is used to soften hard water.
• D) is used to desalinate salt water.

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Definitions:

Cross-Cultural Research

Studies that explore, compare, or contrast behaviors, practices, beliefs, and phenomena across different cultural or ethnic groups.

Theoretical Concepts

Ideas or principles formulated to explain phenomena, forming the foundation of theories within academic fields.

Internal Validity

The extent to which a study accurately demonstrates a cause-and-effect relationship.

Experiments

Scientific procedures undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.