How do you use active transport in a sentence

Forces that are equal in strength but opposite in direction are a.) balanced b.) unbalanced c.) always result in motion d.) do not exist

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity