How is biodiversity related to the biosphere?

Regarding most of the narrator’s story, which word best describes the tone?

Rna primer constructed during dna replication needs to be replaced because rna differs from dna. it contains ( adenine, cytosine, uracil ) instead of ( adenine, guanine, thymine ).

S, tall stems (t) is a dominant trait while short stems (t) is a recessive trait. in a field of 1000 sunflowers, 820 are tall plants and 180 are short. which statement best describes the genotype of the sunflowers in the field?