Children pick up on everything around them in their life, weather you like them to or not. one the fist acts of shaking you head came from children. when they would be they would turn there head to signify something they did not want. children would also see you moving your head up and down when you do something good, or when someone is happy. this would signify something was good. they would express there emotions by these gestures. Charles Darwin wrote a book on this. I hope this helps!
Answer: It is just the way it has been throughout history.
Explanation:
convergent boundary
divergent boundary
transform boundary​
provide structure
break down energy
fight disease
last one ...........
An object that absorbs light would be much hotter upon touch. It might also expand by a few milimeters depending on what material it's made of.
Answer:
An object might feel warm.
Explanation:
Sometimes light contains heat, and the more light it absorbs the warmer it gets.
The steeper the slope of the track the quicker the toy car will accelerate.