The differences in blood types are due to the presence or absence of protein molecules called located on the surface of the cells. there are 3 main proteins which might be present-

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an