1. Which type of antibiotic (broad spectrum/narrow spectrum) is more effective in an emergency situation where the pathogen is unknown? Why? A. broad spectrum B. narrow spectrum

A. broad spectrum

Explanation:

An antibiotic is a substance that has the capability to inhibit the growth of or kill bacteria.

A broad spectrum antibiotic has the capability to be inhibit or kill a wide range of bacteria species while a narrow spectrum can only operate within a narrow range of bacteria species.

Hence, in a situation where the the causative organism of the disease (the pathogen) is not known, it is better to use a broad spectrum antibiotic because such antibiotic has a higher chance of eliminating the pathogen.

I think those are usually called "alternative fuels", or

"alternative energy sources".  Those are things like

wind, solar, hydro, geothermal, tidal, nuclear etc.

I don't like that description at all.  It makes it sound as if

there's something about them that's not quite right, and

that we don't really take them seriously.

The only thing that makes them "alternative" is that we're

just now discovering them, for the first time since we left

the caves.  

Up until now, we've always been happy to burn the stuff

that's cheap and easy to get from a hole in the ground.  

But we're just now starting to notice that it's poisoning

the air we breathe, and plus, so many people have been

using it for so long that now, it's becoming harder to get.  

So we're starting to look around now and see what else

we can use to do the job.