Matthew is assigned a project to learn about cellular respiration. He discovers that the Krebs cycle is a process which occurs in the . *

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.

What type of pollution does household garbage cause

What’s the student’s scientific question