Answer:
The spinal curvatures in the thoracic and sacral regions are referred to as primary curvatures. Sorry that I don't know how they are shaped.
Really, none of these answers are good. leukocytes are the body's general immune cell, and lymphocytes are a type of leukocyte. Antibodies are only used when fighting an infection that your body already has experience with, so I'm guessing it you have to pick from these answers, its "lymphocytes", but it's not really the best answer.
His mother could encourage him to wear sunblock and sunglasses.
No…? If you mean feel then yes but see? No
Empathy is more of a deep understanding