The wings of auks (alcidae), used for swimming, are called an exaptation because:

A. in the ancestor, wings were used for flight, but they also function well in water.
B. individuals that do not use their wings for swimming have lower fitness.
C. female auks are more attracted to swimming males than flying males.
D. they are useful, but don’t affect fitness. they have a de novo form that was not present in ancestors.

What is the problem in this article? what solution does the article propose?

Ture or false evidence for evolution includes millions of fossils

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d