The warm-blooded reptilian ancestors to the dinosaurs and mammals were the ________.
Fill in the blank(s) with the appropriate word(s).
therapsids
Therapsids were the warm-blooded reptilian ancestors to the dinosaurs and mammals.
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Nile blue is used to test for the presence of amino acids
a. True b. False
The first system to develop in the vertebrate embryo is the:a
circulatory system. b. digestive system. c. excretory system. d. reproductive system. e. nervous system.
As air is inhaled, which of these four structures is the last to be encountered?
A) larynx B) trachea C) bronchiole D) bronchi
According to Darwin's theories and observations on "the struggle for existence", organisms better suited to an environment have a greater probability of surviving and will also:
a) lead a long, satisfying life. b) leave more offspring. c) have larger bodies. d) have fewer predators. e) be faster runners.