Question

what characteristic about the tundra biome listed below does not contribute to a reduction of carbon dioxide on earth?
a. nutrient - poor soil
b. permafrost
c. plants and their trapped carbon dioxide are frozen in the earth
d. carbon dioxide sink
please select the best answer from the choices provided

Explanation:

• Option a: Nutrient - poor soil does not directly contribute to carbon dioxide reduction. It mainly affects plant growth in terms of nutrient availability rather than carbon sequestration.
• Option b: Permafrost acts as a carbon sink. It stores large amounts of organic matter (which contains carbon) in a frozen state, preventing decomposition (which would release carbon dioxide).
• Option c: When plants and their trapped carbon dioxide are frozen in the earth (like in permafrost), it is a form of carbon sequestration (reduction of atmospheric carbon dioxide).
• Option d: A carbon dioxide sink is a natural or artificial reservoir that accumulates and stores some carbon - containing chemical compound for an indefinite period. The tundra (with its permafrost etc.) is a carbon dioxide sink.

Answer:

A. nutrient - poor soil