Which question could be answered using the scientific method? Why does my dog like to sit on the sofa?
Would Mars be a fun place to live?
Are butterflies happy?
Do vitamins help people stay healthy?

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?