Answer:
Refraction
Explanation: Reflection is when light bounces off a medium at an angle back to its source.
Refraction bends light, so when it's transmitted through a prism, light is refracted into the colors of the spectrum.
Cell signalling pathways are used to maintain homeostasis. Enzymes are normally present in adequate concentrations but whenever the need for a particular enzyme or protein arises, cell signalling is used.
Signal is sent to that particular cell, the process of genetic expression is activated. A gene that codes for that particular protein(enzyme of interest) goes through transcription, where that genes DNA is copied to make a messenger RNAmolecule, which is further expressed by a process called Protein expression. Lastly, transported to that particular area where it is needed.
A-rain
B-sleet
C-freezing rain
D-snow
So we can tell how many times a heart beats per second
They move by osmosis(a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.).
