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Complete the Words 1: Coral reefs

Complete the Words
Suggested time: 3:00

1.Type the missing letters to complete the words.

Coral reefs are built by tiny animals called polyps. Ea polyp produces a hard skel of calcium carbonate. Over thous of years, these skeletons accu and form large struc. Reefs cover a sm part of the ocean fl, but they supp an enormous var of marine li.

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