The Last Time Atmospheric Carbon Dioxide Concentrations Were 400 Parts

question 98

Multiple Choice

The last time atmospheric carbon dioxide concentrations were 400 parts per million was __________ million years ago.

• A)1
• B)2
• C)3
• D)4

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Definitions:

Nausea Inducing Substance

A substance that causes the sensation of wanting to vomit.

Low-intensity Noise

Sounds that are at a lower decibel level, not necessarily harmful or disturbing, but can influence behavior or physiological responses in subtle ways.

Cancer Patients

Individuals diagnosed with cancer, focusing on their treatment, recovery, and the psychological impact of the disease.

Aversions

A negative reaction, often psychological or physical, to a specific substance or situation.