What unexpected observation lean darwin to develop the theory of natural selection?

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.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?