What you meant must be the adaptive advantage of the frogs' lungs. Frogs are considered as amphibians wherein the have this unique ability to reside either on land or in water. Their specialised lungs could be responsible to these which makes them capable of breathing oxygen in water and land.
I would have to say A. ribosomes are known to break and release their digestive juices into the cell upon cell death. thus killing them
nearly perpendicular or closer to a 90˚ angle
The answer is C. Output device
