Lesson 1: Introduction Flashcards
1
Q
Some of the first bony fish fossils are over?
A
400 million years old
2
Q
How many species ~ of fish has been identified?
A
Well over 25000 species
3
Q
The number of fish species is larger than the total number of all ______ combined?
A
amphibians, reptiles, birds, and mammals combined.
4
Q
poikilothermic?
A
Body temperature can be regulated in response to altering environment and is cold-blooded.
5
Q
A
