Carbohydrates do not have a carbon nitrogen-bond because nitrogen is not found in this protein. So the answer is C) carbohydrate. I hope this helps.
Lungs
Amphibians are known to be animals which can survive both on land and in water. They can walk on land and have limbs to swim. However, they do not have gills to breath but can only breath directly from air through lungs while bony fish have fins to swim in water and can breathe through there gills and filter oxygen from water.
Answer: Typically, the more massive the planet, the more massive the atmosphere it can acquire and maintain.
Explanation:
But a planet's size is not necessarily proportional to its mass. In the end, how massive a planet is has more to do with its composition and density. So while a planet like Mercury may be smaller in size than Jupiter's moon Ganymede or Saturn's moon Titan, it is more than twice as massive than they are.
