The aquatic mammals of the order cetacea are fully water-dwelling, even bearing their young in water.

true
false

Cetacea are basically aquatic mammals that today consists of the whales, dolphins, and porpoises. Cetaceans are carnivorous and finned. Most species live in the sea, some in rivers.

so, answer will be "TRUE"

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True statement gravity force is more on bigger mass, less on smaller mass.all mass fall on planet with same acceleration and speeds

The answer is texture