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Krishna Kumar Prajapati

UPSC 2021 - Question 22

Consider the following kinds of organisms:

Copepods
Cyanobacteria
Diatoms
Foraminifera

which of the following are primary producers in the food chains of oceans?

a. 1 and 2

b. 2 and 3

c. 3 and 4

d. 1 and 4

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