A regional assemblage of interacting ecosystems is a
A) biome.
B) landscape.
C) corridor.
D) hot spot.
Answer: B
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Which two of the following have operated to increase divergence between mosquitofish populations on Andros? 1. improved gene flow 2. bottleneck effect 3. sexual selection 4. founder effect 5. natural selection
A) 1 and 3 B) 2 and 3 C) 2 and 4 D) 3 and 4 E) 3 and 5
How can fossils provide evidence for macroevolutionary processes, such as the divergence of two species from a common ancestor?
A. by providing a complete record of the history of life B. by exhibiting some features of ancestral organisms and some features of more derived organisms C. by preserving the bones, rather than the soft parts of ancient organisms D. by preserving a large number of organisms present in one place and one time, as is seen in Messel Shale
Answer the following questions true (T) or false (F)
1. The three domains proposed by Carl Woese and George Fox are the Archaea, the Eukarya, and the Protista. 2. Gram staining of bacteria provides all the physical characterization necessary to identify bacterial species. 3. A single basic dye is used in simple stains.
________ is caused by excessive pressure in the aqueous humor
Fill in the blank(s) with correct word