Why is s. aureus such a virulent organism? what conditions can it cause? what about the organism can lead to so many different kinds of infection/disease?

The negative impacts of nonnative species generally outweigh the positive impacts

What is the farthest destination to date for a human spaceflight mission?

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.