Bioprospecting is the search for plant and animal species from which medicinal drugs and other commercially valuable compounds can be obtained.
Based on this I think it could be B.
Hope this helps.
The organelle is called the mitochondria
Animals absorb oxygen and release carbon dioxide in respiration and plants absorb carbon dioxide and release oxygen through photosynthesis.
3.13 x 10 ^9
This is because only 1 number is front of the decimal and 2 numbers should be after