Which describes speciation? a. the grouping of a species b. the formation of a new species c. the extinction of an existing species

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

In each transformation of energy , some energy what?

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.