Over many years the buffalo population out west has gradually disappeared. the most likely reason for this is

a. no grass for them to graze on

b. change in climate over the years

c. decrease the # of humans in the west

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.

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?