What system moves O2 and CO2 around?

Need asap plz hurry im being timed when a body cell divides through the process of mitosis, the chromosomes in the daughter cells a. represent only the healthiest chromosomes from the parent cell. b. represent only half of the chromosomes in the parent cell. c. are identical to the chromosomes of the parent cell. d. are formed when chromosomes from the parent cell cross over.

What happens to the amount of waste in the pond as the ecosystem ages?

What is the role of rna polymerase? it creates the dna strand its the dna strand. it transcribe the dna strand il translates the dna strand save and exit next sube mark this and retum