During sleep, bursts of muscular activity cause an individual's eyeballs to move back and forth beneath his or her eyelids.

When organisms convert from of energy, what usually results

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

How can you approximate the number of calories required to keep you in energy balance?