Which of the following statements is true?
electrons have a negative charge.
the n=1 shell can hold eight electrons.
the number of electrons in an atom is equal to the number of neutrons.
the second electron shell can hold 16 electrons.

In which process is oxygen absorbed by an organism asap apex

When organisms are classified ,they are given a two part name

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.