In 1965, CO₂ Levels Reached Approximately ____ Parts Per Million

question 6

Multiple Choice

In 1965, CO₂ levels reached approximately ____ parts per million by volume.

• A) 320
• B) 330
• C) 350
• D) 400
• E) None of the above.

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Definitions:

Paralanguage

The non-linguistic accompaniments of speech such as stress, pitch, speed, tone, pauses.

Gestures

Meaningful body movements and postures.

Facial Muscle Activity

Movements of the muscles in the face that are often analyzed to understand emotions and expressions.

Cognitive Thinking

The process of acquiring knowledge and understanding through thought, experience, and the senses.