Organisms on earth live in the Biosphere
It's 4. just took it, that's 1000% the right answer. that other person stinks for that non-answer, sorry. hope this helps.
ps. if it's not obvious, you figure it out by taking the hypotenuse (120) and putting it over the height (30). 120/30 is pretty simple division.
It is called Red zone becuase there's Extremely high number of fracking wells
It is all of these. Hope this helps! #Batgirl
