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അന്തരീക്ഷത്തെയും ശൂന്യാകാശത്തെയും തമ്മിൽ വേർതിരിക്കുന്ന സാങ്കല്പികരേഖ ഏതാണ്?

Aകാർമൻ ലൈൻ

Bഅയണോസ്ഫിയർ

Cമിസോപ്പാസ്

Dട്രോപ്പോപാസ്

Answer:

A. കാർമൻ ലൈൻ


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      സ്വാംശീകരണത്തിന്റെയും അറ്റ ​​ഉൽപ്പാദന(net production) കാര്യക്ഷമതയുടെയും ഫലം ---- കാര്യക്ഷമതയാണ്.