The nfipa 704 system uses a numerical value between and to indicate the level of hazard for that particular chemical. 

In dunker's candle experiment, subjects weren't able to find a solution to the candle problem because they could not see past the conventional use of the box. which obstacle to problem solving did the subjects experience? (2 points) functional fixation counterproductive heuristic confirmation bias overconfidence

I’m giving out free points and brainliest to whoever answers this fast and correct : ) if you want to obtain a class e license before you turn 18, you a. be in compliance with school attendance requirements b. have proof of employment c. be a u.s. citizen d. own a motor vehicle

Why is it essential to operationally define the variables in a study?