Capillaries belong to which body system?
oa) skeletal
ob) nervous
oc) digestive
od) circulatory

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.

Diffusion and osmosis are forms of passive transport

How does secondary succession differ from primary succession?