Skin lung and blood vessel walls have which tissue characteristic in common

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.

Depending on the organism the number of in a cell may change

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?