Which is not true of the element carbon? 1.Most fuels that are burned for energy contain carbon.

2.Carbon can gain, lose, or share four electrons when reacting with other elements.

3.Carbon is the only metalloid in the carbon family of elements.

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."

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

answer( sicar );