According to the MacArthur-Wilson model, the mainland harbors ____
a. a lower species richness than islands
b. a species pool from which species migrate to nearby islands
c. none of the same species as on nearby islands
d. an easier community to study than nearby islands
e. many species that are extinct on nearby islands
ANSWER: b
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A) 24 B) 12 C) 23 D) 92 E) 16
Which structures are found along lymphatic vessels but are heavily clustered in the armpit, groin, and neck?
A) Galt B) Spleen C) Lymph nodes D) Tonsils E) Thymus
If N(0 ) = 30 and ? = 1.20, what is the population size for year one?
A) 25 B) 28.8 C) 30 D) 36
The ____ is responsible for maintaining the membrane potential across the cell membrane
a. H+ pump b. Na+/K+ pump c. diffusion gradient d. Ca2+ pump e. osmotic ratio