When a bullet is fired, gunpowder only travels back toward the shooter. a. true b. false?

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.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above