The Concentration of Carbon Dioxide in the Atmosphere in 2011

question 60

Multiple Choice

The concentration of carbon dioxide in the atmosphere in 2011 was 394 ppm and the trend is increasing.What is the implication of this for humans.

• A)this exceeds the natural range of carbon dioxide levels for the last 800 000 years and may lead to unequalled rates of atmospheric warming.
• B)this exceeds the natural range of carbon dioxide levels for the last 800 000 years and may lead to unequalled rates of atmospheric cooling.
• C)this rate is part of the natural evolution of the atmosphere and all life on Earth is capable of adapting.
• D)humans do not contribute to the changes in this atmospheric component,so there is no implication for us.

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Definitions:

Amygdala

A component of the brain's limbic system, involved in processing emotions, fear responses, and memory formation.

Prefrontal Cortex

The part of the brain located at the front of the frontal lobe, crucial for decision making, social behavior, and personality expression.

Limbic System

A complex system of nerves and networks in the brain, involved with instinct and mood. It controls basic emotions (fear, pleasure, anger) and drives (hunger, sex, dominance, care of offspring).

Hard-to-classify Child

A child whose behavior, needs, or characteristics do not neatly fit into conventional categories or expectations.