2 Describe the relationship between body mass and total surface area of the air sacs.

Explanation: The body mass is a weight of the person. The total surface area of the air sacs means that in an organism who is having air sacs, spaces are present in them In these air sacs there is a presence of air which is constant.

Explanation:

The relationships between the ratios of Hemoglobin total surface area of such conditions result from the available amount of air sacs that permits.

Birds of 21 species with body mass ranging from 8 to 170 g, in eight species of antiracial.

Air sacs are present as small sacs off the bigger respiration tubes (tracheae) of insects, as prolongation of the lungs in birds, and as final organs in the lungs of certain other vertebrates.

They give to increase respiratory efficiency by giving a huge superficial area for gas transportation.

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the correct answer is b