Biology - Gaseous Exchange

The heart of the fish is single circuit and the blood flows in? Carbon dioxide is carried as carboxy hemoglobin? The __________ system of the cockroach is very specialised? Lung capacity in an adult human? In the lungs of birds instead of already tiny thin walled ducts are present called _________? Hydra has no specialized _________ for respiration? Chlorophyll absorbs light energy, which is converted into chemical energy of? The quantitative study of energy relationships and energy conversions in biological system is called? With the emergence of______, molecular oxygen began to accumulate slowly in the atmosphere?