Which of the following solutions would best address the issues of greatest concern in the community? Construction of a seawall

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

Which of these is not a nucleotide base found in dna?

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone