What was darwin’s role while he was aboard the beagle on the voyage to south america?

How can you keep track of variables in a science experiment?

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.

Who discovered tuberculosis bacteria?