1.

While visiting an aquarium, Aman noticed that fishes open and close their mouths and gill slits frequently. This action forces the surrounding water to enter their body. Which of the following statements justifies the observation made by Aman?

Answer»

While visiting an aquarium, Aman noticed that fishes open and close their mouths and gill slits frequently. This action forces the surrounding water to enter their body.

Which of the following statements justifies the observation made by Aman?




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