A large tropical island is found near the mainland. Based on the predictions of the MacArthur and Wilson equilibrium model of island biogeography this island will have… a. low immigration rates and low extinction rates b. high immigration rates and high extinction rates c. low immigration rates and high extinction rates d. high immigration rates and low extinction rates

Over a period of geologic time, a mountain range arises, separating the plant and animal populations on the two sides. However, climates on the two sides of the mountain range do not change significantly. It is likely this geological change will result in  A.new biomes but not new biogeographic regions.  B.new biogeographic regions but not new biomes.  C.both new biomes and new biogeographic regions.  D.neither new biomes nor new biogeographic regions.  E.lower species diversity on both sides of the mountain range.  asap

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)?

You arrive on an island that has not been previously studied by biologists.  You discover a number of species of snails that bright colored shells and bodies with black bands.  What type of species interaction is most likely to be the cause of natural selection for these colors? Group of answer choices a. predation b. competition c. mutualism d. commensalism

Populationecologists do not study:a.reproductive ecology.b.distribution and abundance.c.energy flow.d.extinction.e.adaptation.

What do bioarchaeologists do?  A. None of these are correct  B. They identify population trends by looking at prehistoric living structures.  C. They identify population trends by looking at skeletal material.  D. They only look at ancient artifacts to study past populations.

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.

slands are well known for having many endemic (unique) species. What is a likely explanation for this pattern?   A. Humans bring partly or fully domesticated species with them when they arrive on islands.   B. Colonizers encounter fewer competitors on an island, so they can diversify.   C. Islands are more complex habitats than continents are, so they have more niches for specializations.   D. Colonizers are likely to have more diversity than local populations and thus outcompete them.   E. The type of organism that is a good colonizer has more than the average amount of genetic variability, so it's more likely to speciate.

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