Which of the following would be a cost of drilling for oil in antarctica? a many new jobs would be createdb there would be a greater opportunity to study area wildlifec the cost of heating fuel would be increasedd an oil spill could harm food sources for polar bears

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.