Which statement is true about silver and gold?? A. They are both made of subatomic particles.

B. They both make up the water molecule.

C. They both are made only of protons.

D. They are both in every living organism

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

What are the characteristics of living things

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.