Mrs. lynn wants to increase attendance to live class connect sessions so she decides
to award 1 bonus point each time a student attends. this is an example of classical
conditioning

The answer is probably c. xylem

To present informationto make information easily available 

Atp, shorthand for adenosine triphosphate, is the standard molecule for cellular enger in the human body. all motion and metabolic  processes  within the body begins with energy that is released from  atp, as its phosphate bonds are broken in cells through a  process  called hydrolysis.

Visible light is located in the middle of the spectrum.