The respiratory system of a perch involves extracting oxygen from the water. Frogs can extract oxygen from water and air while pigeons and pigs can only breathe in air.
The question is hopelessly underspecified. Whose respiratory system? What aspect of the respiration system is being compared? What is it being compared against? For example, the mass of the respiratory system of all living organisms in the solar system, as a fraction of the mass of the solar system is zero for all intents and purposes.
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Respiratory system is the process of living things breathing & photosynthesis is tho process of plants making their own food.
There is very little difference in anatomy and physiology. Dogs are mammals.
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In a parliamentary system, the executive branch is drawn from the legislative branch, with the Prime Minister being the head of government. This contrasts with a presidential system where the executive branch is separate from the legislative branch, with the President being the head of state and government.
The respiratory system is the system that handles breathing.
Most fish use gills for gas exchange instead of lungs
Coronary or cardio is blood flow. Pulmonary or respiratory is breathing.
The Respiratory System
The main difference is that the nervous system controls and coordinates different functions of body and is made up of nervous tissues while respiratory system includes lungs trachea nasal cavities and is concerned with breathing ,its main functional tissues are epithelial and muscular .
The trachea is the airway in the respiratory system.