IV.
A. Directions: Enumerate some uses of light energy
16.
17.
18.
B. Read and analyze the situation. Answer the question below. (2 points)
Sunlight helps boost a claemical in your brain called serotonin. Serotonin can give you
more energy and can help keep you calm, positive, and focused. Doctors sometimes treat
Seasonal Affective Disorder (SAD) and other types of depression linked to low levels of serotonin
with natural or artificial light.
What can you do to avoid this kind of illness?​