Dichotomous key ask
a. open-ended questions about animal behavior
b. open-ended questions about easily observable characteristics
c. yes-and-no questions about animal behavior
d. yes-and-no questions about easily observable characteristics

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.

Wind energy is plentiful in regions with vast open spaces it is a non polluting renewable resource what could be an economic factor that makes the use of this resource less feasible then non renewable resource even in such regions

Plz ! ive been stuck on this forever