I think the answer is all of the above......
dietitians -> need to learn about human body-> biology
zoologists-> need to learn about animals-> biology
so, since two answers are correct the answer is all of the above
Mammals are characteized by feeding milk to their offspring and giving birth to these instead of laying eggs.
Answer:

Hope it helped,
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Finches in the Galapagos Island are good example of adaptation because these finches have undergone several variations in their beak shape and form according to their ecological niche.Nov 29, 2017
tricuspid valve is located between the right atrium and ventricle