Why is it that species cannot occupy the same niche in the same habitat at the same time?

In which specialized organ of the plant would these cells most likely be found

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 friction with the atmosphere affect the speed of an artificial satellite