Which of the following observations would provide the strongest evidence that two plants belong to different biological species? A. There are variations in their RNA sequences.

B. The leaves and flowers show morphological differences.

C. They produce viable but sterile offspring.

D. They occupy unique habitats in an ecosystem. .

Draw the structure of dna nucleotide with adenine as nitrogenous base

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Wich level of organization includes all the other levels or organizations