They take in oxygen and release co2 by their skin, lungs and sometimes tissue in their throats.
Cutaneous gas exchange.
The gas exchange organs in humans and sheep are quite similar. Both animals have similar functions and therefore need similar organs like lungs.
Butterflies do indeed take part in the exchange of gasses. They need oxygen to breathe just like most living animals.
to maintain proper metabolism, mainly gas exchange
We know that reptiles have lungs, just like many other animals do.
plants don't let out any gas in fact I know they don't by looking at the question
cutaneous
Plants let out gases. This gas is called oxgen which animals and humans need to breathe so we can live. Animals let out a gas called carbon dioxide and the plants need to take in the carbon dioxide to live.
Gas exchange is a function of respiration not digestion.
The exchange of gas refers to the process where gases are transferred between two materials or systems. In biological terms, this often involves the exchange of gases like oxygen and carbon dioxide in respiration. In chemistry, it can involve the exchange of gases in reactions or the movement of gases between different phases.
The primary function of external gills in aquatic animals is to exchanges gases. However, gas exchange is more difficult with external gills.
Alveoli is where gas exchange occurs.