Put the number by which one you answer

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.

What is responsible for the uneven heating between the poles and the equator on any given day

What will happen if two of the base pairs of the stand of the dna are switched