Which statement best describes a difference between scientists and engineers?
O Scientists build prototypes, while engineers test failure points
Scientist design machines, while engineers conduct experiments
Scientists and engineers are the same. They both study how things work
Scientists study how things work while engineers create new things

If you rub a balloon on a piece of fabric or carpeting and then hold it against your head, your hair can stand on end. use what you have learned in this lesson to explain why this happens.

Which of the following is an example of proximodistal pattern of growth? (a) abbey learning to sit first before learning to stand or crawl (b) alex learning to move his eyes before learning his first words (c) colin learning to stare at moving objects before trying to touch them with his hands (d) polly learning to grab the objects with her whole hands before learning to pick them up with her fingers

True or false: the eastern roman empire lasted for 1,000 years longer than the western roman empire.