Write the rational number as a decimal -9/10

Indicate whether the scenario below is safe or unsafe: when storing a flammable liquid, you decide to separate it from other materials by a fire wall.

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.

** psychology ** in what type of behavior does an individual adopt the beliefs of a person whom he or she admires