Answer:
A.
Explanation:
A. Gas exchange happens through diffusion.
Purebreed is where both parents are the same breed to produce an offspring of the same breed.
The answer to this question would be: triglyceride
Triglyceride is made of a glycerol with three fatty acids. A similar structure to this would be the diglyceride which was consist of glycerol with two fatty acids. Triglyceride could transport adipose fat or glucose to or from the liver. A high level of triglyceride is linked to heart disease and other atherosclerotic.
