Just need help of what the word is

Talking listening and reacting non verbally are all part of communicating

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.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots