A swim bladder is a gas-filled sac that helps fish maintainbuoyancy. The evolution of the swim bladder from the airbreathing organ (a simple lung) of an ancestral fish is anexample of(A) exaptation.(B) changes in Hox gene expression.(C) paedomorphosis.(D) adaptive radiation

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A: Hi! Since you posted more than one question, we will be answering the first question for you. If you…

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A:

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Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.