Why can I hear my heartbeat, it’s very loud.

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.

Discuss the functions of epithelial connective nerviud and muscular tissues

Describe characteristics of a good respitory surface