The disappearance of dinosaurs about 65 million years ago is an example of ____
a. adaptive radiation
b. natural selection
c. genetic drift
d. mass extinction
e. minor extinction
ANSWER: d
Biology & Microbiology
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Certain groups of cells move inward from the surface of the blastula in a carefully orchestrated migration called
A. blastulation B. archenteron formation C. morula formation D. gastrulation E. cleavage
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Trees in the Arctic are predicted to move ________ in response to warming trends
Fill in the blank(s) with correct word
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The feces of which of the following would contain a high concentration of uric acid?
A) Bird B) Insect C) Mollusk D) Flatworm
Biology & Microbiology
Lipid A causes disseminated intravenous coagulation (DIC).
Answer the following statement true (T) or false (F)
Biology & Microbiology