Nitrous Oxide can kill you be means of suffocation if the concentration is high enough.  

We want to concentrate on wholesaling initially, and eventually would like to go into rehabbing and buy and holds. 

Concentrate on big items like foundation, roof, flooring, hardscape, Windows, etc. 

While there are several complexes, there seems to only be duplexes concentrated in certain areas of zip codes, unlike other cities I've seen where almost a whole block is all duplexes.

For starters it depends if your concentrating on flips or rentals.

Phoenix has grown concentrically for decades and based on the planning models I see that trend is going to continue.

This place seemed to have the most potential and we love it here.I've been concentrating on multi's throughout the valley. 

"Dabs are concentrated doses of cannabis that are made by extracting THC and other cannabinoids using a solvent like butane or carbon dioxide, resulting in sticky oils also commonly referred to as wax, shatter, budder, and butane hash oil (BHO).

I put little though into those I reject and prefer to concentrate/agonise over those I accept. 

Concentrate on saving as much money as you possible can by living a frugal life style.