Mountain geese never sit on the water, but they have swimming membranes. Explain why?

1) Swimming membranes of mountain geese – atavism (comparative anatomical evidence of the evolution of the organic world)
2) This example illustrates the relativity of adaptations in living organisms, i.e. adaptations useful in one environment turn out to be useless and even harmful in others.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.