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GS Geography Physical Geography of World
Q.

Algae belongs to which of the following levels of the ecosystem?
Explanation:

ANS. (C) 
Most types of algae are classified as producers within an ecosystem because they are able to produce their own food. However, while most algae are autotrophs, meaning they can produce their own food through inorganic compounds, there are a minority of algae types that are heterotrophs (e.g. euglenophyte), meaning that they cannot make their own food.

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