HELP PLEASE, its a test due now

15 points come and ! which characteristic describes all bacteria? a rod-shaped b microscopic c multicellular d autotrophic

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.

Explain how scientists use geologic time to determine the age of landforms.