It is generally accepted that the vertebrates that evolved during the early Devonian period are the
A. sharks and bony fish.
B. hominoids.
C. birds.
D. dinosaurs.
E. mammals.
A. sharks and bony fish.
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H. floresiensis fossils found on the Indonesian island of Flores have been dubbed “hobbits” by the media because of
what feature? a. They had small brains. b. They had large feet c. They were only 1 m tall. d. They had stone fireplaces. e. They were found to have lived in trees.
reduction reaction
What will be an ideal response?
The tendency of certain forest species to occur in certain habitats (ridge tops or moist river bottoms, for example) is convincing evidence for the closed community concept.
a. true b. false
The following events occur in cellular immunity, leading to a response from TH cells. What is the third step?
A) Antibodies are produced. B) Dendritic cell takes up antigen. C) Antigen enters M cell. D) TH cell produces cytokines. E) TH cells proliferate.