Answer:
It is normal for there to be veins visible underneath the tongue, partly because the mucous membrane is so thin and translucent in this region, but where these vessels become dilated and tortuous, they may appear round and black like caviar.
It is a chromosomal abnormality. Hope this helps!
To give students the answers they need to succeed.
Probably true since that seems to be what's happening
The lack of IRON can cause anemia
