The Graph Shows Records of Temperature (Light Gray Line) and CO₂

question 63

Multiple Choice

The graph shows records of temperature (light gray line) and CO₂ (dark gray line) over the past 1,000 years. CO₂ is recorded in parts per million (ppm) .
-Currently, atmospheric CO₂ levels are approximately 400 ppm. The annual mean growth rate in CO₂ is about 2 ppm/year. Assuming this trend continues, what would you predict the CO₂ level to be in 100 years?

• A) 100 ppm
• B) 200 ppm
• C) 600 ppm
• D) 1,000 ppm

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Definitions:

Passive Dispersal

A mechanism by which organisms or their propagules spread from one location to another without their own locomotion, often relying on external forces.

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Small Offspring

Refers to the progeny of an organism that are smaller in size at birth or hatching, often a strategy influenced by environmental conditions or parental investment.

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