In an experiment in which the volume of sand is measured by the displacement of water, the sand was slightly wet to begin with. what effect would this have on the volume of air space that was calculated? on the percentage of the volume that was air space?

c)as speed changes, wavelength and frequency change.

everything changes!

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."