HELP

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.

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?