Explain what might happen to tundra animals, such as polar bears, as earths climate warms.

An item not normally included in ansi recommendations, but recommended by other groups is: a) a syringe b) a blood pressure monitor c) a defibrillator d) all of the above

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b