The theory of Endosymbiosis explains... A) how bacteria live. B) How species develop. C) the origin of eukaryotes. D) why cells rely on one another.

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

Which claim correctly describes how genes can produce a phenotype? one gene is responsible for all traits. each trait is determined by a single gene. one gene can be responsible for many traits. each gene is responsible for exactly one trait.