Weegy: The combining vowel is placed between two word roots.
User: how many amino acids are there?
Weegy: There are 21 amino acids.
User: inflammation of the peritoneal cavity is called?
Weegy: Inflammation of the peritoneal cavity is called peritonitis.
User: what's the definition for intra-?
Weegy: 2 + 2 = 4
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