When a toy car is moving across a flat surface, what forces are acting on it (gravity, tension, spring, friction, air, normal, applied)?

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

he . if i may ask what i your question exactly?

explanation:

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."

because growing process had stoped after 4-5 year