An extinction vortex describes a) changes in a population’s gene pool that lead to a loss in fitness across time. b) a species ability to adapt to changes in their environment. c) the continuous series of extinctions caused by competition between species. d) a population that has a reduction in fitness because it cannot escape a Hardy-Weinberg Equilibrium.

Extinction Match the following items. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice. Sudden, dramatic loss of biodiversity mass extinction Routine loss of biodiversity; about 1 per million species years background extinction

The theory of island biogeography suggests that island colonization is affected by which of the following factors? Allopatric speciation Ecological tolerance Adaptative evolution Migration rates A) II only  B) IV only C)  I and II D)  II and III

Could you please help find a reasonable answer that fit the hypothesis?

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.

You arrive on an alien planet and settle down to live there for a long time.  There are very few species.  Two of the species (A and B) are sometimes common and sometimes rare.  When you start keeping track of population changes you discover that the population sizes fluctuate on a regular cycle in close synchrony.  Species B always increases first, followed by species A. Which of the following would be the best explanation for what you are seeing? Group of answer choices -Species A is a predator and there is a time lag between changes in the density of its prey and species A's population change -Species A is a predator and it can respond instantly to changes in its prey population -Species B is a predator and there is a time lag between changes in the density of its prey and species B's population change -Species B is a predator and it can respond instantly to changes in its prey population

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

Define extinction