Observe the virtual skateboarder coming down the hill and over the ramp.
describe how each of newton's laws of motion can be observed in this action.
you can choose the dry, wet, or muddy conditions, or some combination of these.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

the closer the planet is to the sun, the larger the gravity

answeralert drivers who drift off the road;