Dolphins are animals that live in water, but they do not have gills. What might this suggest about dolphins?(1 point)
Responses
They do not need to release carbon dioxide.
They do not need to release carbon dioxide.
They do not need oxygen.
They do not need oxygen.
They have another structure to obtain oxygen.
They have another structure to obtain oxygen.
They make their own food.
1 answer
They have another structure to obtain oxygen.
27 answers