Coral reefs are complex ecosystems that are facing a number of threatening processes on a global scale. One such threat is increasing ocean acidification due to the increase in the amount of carbon dioxide being absorbed from the atmosphere. Another threat is coral bleaching due to an increase in ocean temperatures. Both of these impacts _________. are caused by the natural greenhouse effect. will eventually result in coral reef ecosystems becoming extinct. are of little concern due to the high levels of biodiversity in coral reef ecosystems. are caused by the increasing levels of carbon dioxide that have been added to the atmosphere by human activities.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Coral reefs are complex ecosystems that are facing a number of threatening processes on a global scale. One such threat is increasing ocean acidification due to the increase in the amount of carbon dioxide being absorbed from the atmosphere. Another threat is coral bleaching due to an increase in ocean temperatures. Both of these impacts _________.

are caused by the natural greenhouse effect.
will eventually result in coral reef ecosystems becoming extinct.
are of little concern due to the high levels of biodiversity in coral reef ecosystems.
are caused by the increasing levels of carbon dioxide that have been added to the atmosphere by human activities.
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