If we measured from the crest of one wave to the crest of another wave, we would be measuring the

a. amplitude

b. wavelength

c. frequency

d. velocity

6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?