9.We the mammals

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Mammals are up amongst all other animals .More interesting they are for their behavior and intelligence. Do we need to say more? We have to save them

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Order : Cetacea : Order : Cetacea Aquatic mammals Forelimbs modified into flippers for swimming. The hind limbs are absent. Some have dorsal fin Tail is horizontally divided into… 'flukes'.

Slide 2 : No hair on their body No skin glands except those of eye and mammary gland. No pinna (external ear). Dolphins, Porpoises, Sperm whales (toothed ones) Baleen whales Cetacea

Slide 3 :

Blue whale : Blue whale

Killer whale : Killer whale

Dolphins : Dolphins

Sperm whale : Sperm whale

Slide 8 :

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Dr SUBROTO BISWAS
BIOLOGY INSTRUCTOR, COLLEGE OF THE NORTH ATLANTIC
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