Which of these species is not endangered today to successful conservation efforts?

Which system revise and send electrical signals throughout the body

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.

How does natural selection change thephenotypes within a population over time?