One Way in Which Concentrations of CO₂ Millions of Years

question 54

True/False

One way in which concentrations of CO₂ millions of years ago can be reconstructed is from the density of stomata in fossilized leaves.

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Definitions:

Ruminate

To think deeply or repeatedly about something, often about problems or negative experiences.

Susan Nolen-Hoeksema

A psychologist known for her work in gender differences in depression and the ruminative response style in depression.

Depression

A mood disorder characterized by prolonged feelings of sadness and loss of interest in daily activities.

Laziness

A disinclination to activity or exertion despite having the ability to act or exert oneself.