The trumpeter finch is a bird in the least concern category. What does this mean?         The trumpeter finch is abundant.         The trumpeter finch is extinct.          The trumpeter finch has not been evaluated by the International Union for Conservation of Nature (IUCN).         There is no data on the trumpeter finch to determine the number of individuals.

The smallest population of a species that is likely to be able to survive in the long term is called the_________ . When suitable habitat for a given species is split up into areas that are too small to support a large enough population, this is called_______ . One way to maintain large enough populations is to set up core reserves of suitable habitat, connected by_______ .

A researcher wanted to know if introduced predators (lake trout, a fish) caused a decrease in the abundance of yellow-legged frogs.  The ecologist measured the density of frogs (number frogs per meter of shoreline of a lake) in lakes that did not have any introduced predators (fish absent), lakes that had previously introduced predators (fish present), and lakes from which he removed the predators (fish removed), and then recorded if frog density increased, decreased, or stayed the same over one year.  part a:    What was the role in the experiment of the “fish present” lakes? Group of answer choices A. subjects B. experimental group C. positive control group D. negative control group E. standardized condition part b:   This study focused primarily on ______________ ecology. Group of answer choices A. organismal B. population C. community D. physiological E. biosphere

The number of species on an island usually _______ with the size of the island and _______ the distance       from the mainland to the island. increases; increases with increases; is unaffected by increases; decreases with  decreases; increases with decreases; is unaffected by

Which organism is more likely to become extinct: an endangered species or a threatened species? Explain your answer.

Mountain lion ranges can span up to how many square miles? A) 10 B) 20 C) 100 D) 200

What was responsible, in part, for the Migratory Bird Treaty Act, which was passed in 1918? changes in climate increased interest in hunting lack of breeding grounds fashion trends that required bird feathers

An ecologist studied how many kangaroo rats could be supported in two different habitats, a high‐quality habitat and a low‐quality habitat. The ecologist estimated the per capita benefit in each habitat as the number of individuals increased.

A species of geese migrates to an area with several other geese population. What might occur as a result?

The model of metapopulations also postulates that many species occupy their patches only temporarily, that sooner or later they will be eliminated by competition or some other factor. If this is true, would such a patch make a suitable wildlife preserve for that species? Discuss what wildlife managers might have to do with such a preserve.