Less Than Half of the CO₂ Released into the Atmosphere

question 3

Multiple Choice

Less than half of the CO₂ released into the atmosphere by human activity remains in the atmosphere. The rest can be found in the oceans. What factors affect the cycling of CO₂ between the atmosphere and the ocean?

• A) Algae that combine bicarbonate ions with calcium (Ca²⁺) to form calcium carbonate and sink to the ocean floor when they die
• B) Photosynthetic rate of phytoplankton
• C) Respiration of organisms living in the oceans
• D) Both a and b
• E) None of the above

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Definitions:

Ruffini End Organs

Sensory receptors within the skin that respond to stretch and twisting, contributing to the sense of body position and touch.

Merkel Disks

Specialized nerve endings in the skin that respond to light touch, contributing to the sensation of texture and pressure.

Meissner Corpuscles

Special nerve cells located in the skin that detect sensations of gentle touch.

Temperature Perception

The sensory detection and interpretation of changes in external and internal temperature by the body.