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05/08/2021 8:11 pm
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What is common in Whale, Bat and Rat?
(1) Extra-abdominal testes to avoid high temperature of body
(2) Absence of neck
(3) Presence of external ears
(4) Muscular diaphragm between thorax and abdomen
1 Answer
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05/08/2021 8:12 pm
(4) Muscular diaphragm between thorax and abdomen