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 make their own food.
They make their own food.
They have another structure to obtain oxygen.
They have another structure to obtain oxygen.
They do not need oxygen.
.,
1 answer
They have another structure to obtain oxygen. This suggests that dolphins have adapted to living in water by developing a different way to obtain oxygen, such as through their lungs and breathing at the surface.