plz answer these two and give reason..
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19- (a) bcz labeo is a bony fish and chamaleon is a reptile and salamander is a amphibia all don't have 4 chambered heart
20- both a and b are correct acc to me bcz blood get mixed up due to absence of 4 chambered heart
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19. (a) Labeo , Chameleon, Salamander
(Labeo is a wish, Chameleon a reptile and Salamander a amphibian)
20. (b) Amphibians and Reptiles
(they both have two chambered heart)
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