Glacial Ice Cores Can Be Used to Determine the Atmospheric

question 21

Multiple Choice

Glacial ice cores can be used to determine the atmospheric concentration of CO₂ during the Earth's history.How do scientists come up with these data?

• A) They use the thickness of the ice layers to determine how much CO₂ was in the atmosphere.
• B) They melt the ice and measure how much carbon was trapped in the ice.
• C) They record changes in the shape of ice crystals to determine the paleoclimate.
• D) They break the ice apart,release the air trapped in bubbles,and then measure the gases.

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Definitions:

Privacy

The state or condition of being free from unauthorized intrusion or disclosure, especially concerning personal information or space.

Isolation

The experience of being separated from others; can also refer to a stage in Erikson's theory of psychosocial development during young adulthood.

Peak Experience

a term in psychology that denotes a profound, deeply moving, often euphoric state in which an individual feels a sense of harmony and overwhelming joy.

Ego

A part of the psyche that mediates between the conscious, the unconscious, and the external world, according to psychoanalytic theory.