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can someone me with biology and give me the correct answers?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

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

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere