Which North American countries border the Pacific Ocean?

This cartoon appeared in 1916. the topic of the cartoon isa)the reason for the start of world war i. b)the success of us submarines in world war i. c)the military alliance between germany and mexico. d)the attitude in the us towards submarine warfare in world 

Energy is the total kinetic energy of particles of matter.(chose wisely & pick one) a. mechanical b. thermal c. electrical d. chemical

Which products do you think required scientific knowledge to develop?