What does nitrogen fixation accomplish?
O
A. It allows bacteria to use nitrogen to grow.
O
B. It allows respiration to occur.
O
C CU
C. It allows plants to use nitrogen to grow.
O
D. It allows industry to mass-produce nitrogen.

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.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

What is the number of phosphates in an atp molecule