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Regarding Algae's ecological importance choose the incorrect one:

( a ) none of the above
( b ) At least a half of the total carbon dioxide fixation on earth is carried out by algae through photosynthesis
( c ) primary producers of energy-rich compounds
( d ) increase the level of dissolved oxygen in their immediate environment
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(D) is the right answer. At least a half of the total carbon dioxide fixation on earth is carried out by algae through photosynthesis. Being photosynthetic they increase the level of dissolved oxygen in their immediate environment. They are of paramount importance as primary producers of energy-rich compounds which form the basis of the food cycles of all aquatic animals.
answered Jan 3, 2014 by pady_1
edited Apr 2, 2014 by pradeesh.chinnasamy_1
 

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