active margin
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See convergent plate boundary.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Words nearby active margin
active hyperemia, active immunity, active layer, active list, actively, active margin, active mass, active-matrix, active methyl, active optics, active principle
The American Heritage® Science Dictionary
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