All vertebrates such as fish, amphibians, reptiles, birds, and mammals all have an embryonic stage in which they resemble tadpoles. Based on this information, which of the following is the best conclusion about the evolutionary histories of fish, amphibians, reptiles, and mammals?

9. the history of life on earth is recorded in

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

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.