Answer:
pleura
Explanation:
Pleura is a soft tissue that protects the lungs
C.specialized cells
such as choanocyes which grab food when filter feeding
The presence of palpable lymph nodes.
Lymph nodes are relatively large in children, and the supperficial ones often are palpable even when the child is healthy.
I'm sorry but can you be a bit more specific on these following observations?
