How does this different show that whales and animals with four legs are probably descended from a common ancestor?

How does this different show that whales and animals with four legs are probably descended from a common ancestor?
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Description : Which is most primitive ancestor of man ? -General Knowledge

Last Answer : answer:

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Description : Which is most primitive ancestor of man

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Last Answer : (d) Cro-magnon man’s fossil has been found in Ethiopia.

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Cordaites (pron: kor-day-i-tees) were the ancestor of one of the following. Were they primitive: w) amphibians x) cone-bearing trees y) snakes z) sharks

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Description : I'm not pants but I have pockets;I can't dance but I have four legs.I come in different sizes depending on the size of the room.What am I? -Riddles

Last Answer : Pool table

A DNA with unequal nitrogen bases would most probably be (a) single stranded (b) double stranded (c) triple stranded (d) four stranded

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If Adidas needs to survey retailers attitudes on the availability of product literature in athletic shoe shops and needs the results within four working days, Adidas will probably use _________ survey. A)a mail B)a telephone C)a mall intercept D)a personal interview E)an in-home survey

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Last Answer : B)a telephone

What animals have only 2 legs?

Description : What animals have only 2 legs?

Last Answer : Bats.

When the results of a Pap smear are reported as class 5, the nurse recognizes that the common interpretation is a) malignant. A class 5 Pap smear, according to the Bethesda Classification, indicates squamous cell carcinoma. b) normal. A class 1 Pap smear is interpreted as normal. c) probably normal. A class 2 Pap smear is interpreted as probably normal. d) suspicious. A class 3 Pap smear is interpreted as suspicious.

Description : When the results of a Pap smear are reported as class 5, the nurse recognizes that the common interpretation is a) malignant. A class 5 Pap smear, according to the Bethesda Classification, ... is interpreted as probably normal. d) suspicious. A class 3 Pap smear is interpreted as suspicious.

Last Answer : a) malignant. A class 5 Pap smear, according to the Bethesda Classification, indicates squamous cell carcinoma.

Do whales jump out of the water because they are itchy?

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Last Answer : They need air to breathe.

Has anyone read a good book about whales?

Description : Has anyone read a good book about whales?

Last Answer : Free Wille, Star Trek 4, Mobey Dick. You might get lucky searching for PBS or YouTube. Sorry that I couldn’t find a science documentary.