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Learn new words with our vocabulary challenge!
With a subscription, you can answer quizzes and track your reading progress.
Learn new words with our vocabulary challenge!
With a subscription, you can answer quizzes and track your reading progress.
Oceans and marine life
Did you know that nearly 71 per cent of the planet is covered in oceans? It is known to be the habitat of over 230,000 species, but may hold considerably more – perhaps over two million. There is so much we do not know about the ocean, and very little we might ever learn.
