Tiny ____________ are carried along by the currents like jellyfish. (organ)
The whale is an _____________ species. (danger)
A dolphin gives birth to one calf every 2 years after a _________ period of 11 to 12 months.
(gestate)
Plants and animals of the sea ___________ to its biodiversity. (contribution)
Scientists now overcome the challenges of the ______ by using modern devices. (deep)
What would happen if the sea biodiversity were not _________. (maintenance)
Fishes and sharks move ____________of water currents. (independent)
Thanks to modern technology, scientists can _____________ the life of plants and animals under the sea.
(investigation)
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