Which of following best defines muscles? A. long flexible tendons that connect bones
B. tough strong tissues that provide energy to perform physical activities
C. thick fibrous cartilage that act when sent electrical signals
D. smooth long fibers that are controlled by the skeletal system
It's that time of month!!!

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Name the non metal condut electricity