Which of these would be the best way to find whether a toy car will roll faster down a board covered with sandpaper or a board covered with aluminum foil?
A measuring the time it takes the car to roll all the way down each board
B. measuring how far the car rolls down each board
C. measuring how much weight each board will hold before breaking
D. measuring the length and height of each board

What was the purpose of the spanish missions in new spain

Cooper's contribution to the american novel was savestylesformat instructions

An externality can be created by a. people working at a production job and enjoying their work b. a production activity but not a consumption activity c. a consumption activity but not a production activity d. a production activity or a consumption activity externalities a. are always positive, and an example is flu vaccinations b. are always negative, and an example is the pollution created by trucks c. can be negative or positive. logging has a negative externality, and education has a positive externality d. can be negative or positive. a negative externality is having to go to school when you would rather go to the beach, and a positive externality is spending time with your friends