Lesson 1: Introduction Flashcards

1
Q

Some of the first bony fish fossils are over?

A

400 million years old

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2
Q

How many species ~ of fish has been identified?

A

Well over 25000 species

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3
Q

The number of fish species is larger than the total number of all ______ combined?

A

amphibians, reptiles, birds, and mammals combined.

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4
Q

poikilothermic?

A

Body temperature can be regulated in response to altering environment and is cold-blooded.

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5
Q
A
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