Imagine that you are managing a large game ranch. You know from historical accounts that a species of deer used to live there, but they have been extirpated
After doing some research to determine what might be an appropriately sized founding population, you reintroduce them. You then watch the population increase for several generations, and graph the number of individuals (vertical axis) against the number of generations (horizontal axis). With no natural predators impacting the population, the graph will likely appear as _____.
A) a diagonal line, getting higher with each generation
B) an "S" that ends with a vertical line
C) an upside-down "U"
D) a "J," increasing with each generation
Answer: D
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Amniocentesis is
a. a surgical means of repairing deformities. b. a form of chemotherapy that modifies or inhibits gene expression or the function of gene product. c. used in prenatal diagnosis to detect chromosomal mutations and genetic disorders in embryos. d. a form of gene replacement therapy. e. all of these.
In all ecosystems, the biomass of primary producers is greater than the biomass of herbivores
Indicate whether the statement is true or false
The swim bladders of fishes function primarily in ventilation
____________________ Indicate whether the statement is true or false.
The breakup of large areas of habitat into small, isolated patches is called:a
extinction. b. habitat fragmentation. c. invasive species. d. unsuitable territory. e. habitat endangerment