Why is adaptation necessary

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

What is the cause hearing loss in human being