Models are useful of scientists, but they can have drawbacks. for example models can oversimplify a process or show only parts of the structure or involved in the process. list two pros and two cons of the model you created in part A

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f

All phases of matter may have a fixed mass