Which of the following ecosystem types has the highest annual net primary productivity?

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ഇനിപ്പറയുന്ന ഇക്കോസിസ്റ്റം തരങ്ങളിൽ ഏതാണ് ഏറ്റവും ഉയർന്ന വാർഷിക അറ്റ പ്രാഥമിക ഉൽപ്പാദനക്ഷമതയുള്ളത്?

Aഉഷ്ണമേഖലാ ഇലപൊഴിയും വനം

Bമിതശീതോഷ്ണ നിത്യഹരിത വനം

Cമിതശീതോഷ്ണ ഇലപൊഴിയും വനം

Dഉഷ്ണമേഖല മഴക്കാട്

Answer:

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