Objects within a system

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good