What is the animal in the accompanying figure?
a. mosasaur
b. plesiosaur
c. pterosaur
d. thecodont
e. ichthyosaur
e
Biology & Microbiology
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Which of the following systems is the most stable in terms of species composition and distribution?
A. populations B. communities C. ecosystems D. biomes E. trophic pyramids
Biology & Microbiology
Based on molecular analyses, scientists now believe the domestication of the closest relatives of modern dogs began
between ____ years ago.
a. 800 and 1,200 b. 1,000 and 3,000 c. 4,000 and 8,000
d. 9,000 and 12,000 e. 18,800 and 32,100
Biology & Microbiology
The region of the mantle below the crust is called:
a. the asthenosphere. b. the mantle. c. the lithosphere. d. the outer core.
Biology & Microbiology
What is the surgical removal of cells, tissue, or fluid that will be analyzed for cancerous cells?
What will be an ideal response?
Biology & Microbiology