Some beetles and flies have antler-like structures on their heads, much like male deer. the existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of ) homology b) similarity due to shared ancestry c) parsimony d) convergent evolution

The correct answer is D) Convergent evolution.

Explanation:

Even though between flies and beetles it could be considered as a homology, between such insects and deers it's absolutely a convergence. Homologies are comparable characters between taxons that could have evolved from a common ancestor that had these structures. The common ancestor between insects and deers is really far in the phylogeny so the structure is not comparable.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

it takes hundreds of years to become stable.

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