The main reserves of phosphorus in the biosphere is in the-

A hydrosphere
B atomosphere
C lithosphere
D troposphere

Correct Answer: lithosphere

জীবমন্ডলের অশ্মমন্ডলে ফসফরাসের মজুদ রয়েছে। এ অশ্মমন্ডলের গুরুত্বপূর্ণ উপাদানগুলো অক্সিজেন (৪২.৭%), সিলিকন (২৭.৭%) অ্যালুমিনিয়াম (৮.১%), সোডিয়াম , পটাসিয়াম ,ফসফরাস ইত্যাদি। বায়ুমন্ডলের প্রধান উপাদান নাইট্রোজেন।
Bissoy MCQ

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