1. Which of the following island features are associated with the highest species richness? A. big islands (low extinction rates), and distant from the mainland (low immigration rates) B. small islands (high extinction rates), and distant from the mainland (low immigration rates) C. small islands (low extinction rates), and close to the mainland (high immigration rates) D. big islands (high extinction rates), and distant from the mainland (low immigration rates) E. big islands (low extinction rates), and close to the mainland (high immigration rates)

Which of the following statements related to classifications of rarity and extinction is TRUE? A species with an extensive geographic range and large local populations cannot be vulnerable to extinction. O Once species are the list of endangered species, they can never recover. O Species that are the most vulnerable to extinction have small population sizes, broad habitat tolerances, and narrow geographic ranges. O The majority of bird species that have gone extinct were those restricted to islands.

d. community 20. How can geography lead to reproductive isolation? a. Some populations may have a milder habi tat than other populations. b. Subspecies may choose to occupy different areas for competitive reasons. c. Extremes of temperatures may reduce the breeding opportunities for some. d. A physical barrier may arise and separate a population, preventing interbreeding. lluminate Education M Inc.

A.) What influence did human density (Panel A), crow density (B), and avian species diversity (D) have on the probability of crow decline in aregion? B.) From a co-evolutionary perspective, why did the likelihood of crow population declines decrease as WNV spread westward after its introduction in 1999 (see Panel C above)?

9 According to the text and figure 2, which statement accurately describes relationships among variables in the SAVANNA model? A. Predation is directly affected by bison distribution and weather.   B. Plant population is directly affected by water, fire, and bison population.   C. Bison distribution is directly affected only by weather and predation.   D. Bison population is directly affected only by predation and hunting and culling.

Two islands in the Pacific Ocean are of equal size but differ in their distance from the mainland. Island C is 5 km from the mainland, while Island D is 50 km away. According to island biogeography theory, how would the extinction rates on these islands compare and why? Group of answer choices: A. Island D would have higher extinction rates because its greater distance from the mainland makes it harder for species to recolonize after local extinctions, reducing species turnover B. Both islands would have similar extinction rates because island size, not distance from the mainland, primarily determines extinction rates C. Island C would have lower extinction rates due to its smaller distance from the mainland, allowing easier recolonization and rescue effects D. Island C would have higher extinction rates due to its proximity to the mainland, which increases competition and predator pressure from mainland species

Species 1 2 3 5. A biologist notices that plants growing in dense thickets of vegetation (uncleared areas) tend to be much smaller than when they are grown in isolation in cleared areas in his garden. As they are a very cool gardener, in addition to being a very cool person in general, they do an experiment and observe the following for five plant species: 4 5 Biomass of the species in uncleared areas (g) 19 14 14 29 50 Biomass of the species in cleared areas (g) 20 34 48 39 51 Explain these results and the concept behind them thoroughly, including in quantitative terms

The average niche breadth for space resources is wide for species of barnacles in an intertidal community. This pattern would indicate… a. niche overlap is low b. a greater level of competition between species c. coexistence via resource partitioning d. a greater number of species in the community e. high levels of disturbance

The video discuss some of the factors that allowed lionfish to expand throughout the Atlantic region. Which of the following reasons were given for why the lion fish population has been able to expand so rapidly? A. The Atlantic region has fewer parasites that attack lionfish. B. The lionfish outcompete native fish for food. C. Lionfish are able to breed more frequently the native fish. D. Atlantic predatory fish don't eat lionfish. E. None of these