Investigators pull out a sniffer to use at the scene of a fire. What is the sniffer designed to do?

to find key edvadence

Explanation:

they take dogs to smell out key things that could start a fire as in a match kind like other dogs that are assigened tfing drugs and etc heres more infomation i found " Dog Fire Safety In addition to decreasing the risks of your dog actually starting a house fire, employing a few safety tips can greatly increase your canine pal's chance of survival if a fire does occur for any reason." i would put it in your own words just because its wordy .    

answers

a. nitrogen (n)

d. oxygen (o)

hope it

answerthey protect the head and neck in rear impacts;