What effects did the introduction of the nutria have on ecosystems throughout the U. S?(Mark All that apply)
A. Nutria, in fact, do feed on noxious weeds
B. Nutria feed on native plants that hold wetland soil together
C. The largest nutria population are located in freshwater rocky coastal areas of New England.
D. Another name we could give to nutria would be invasive species
E. Nutria’s digging, rooting, and swimming causes massive erosion, converting healthy marsh habitat for native species into open water habitat
F. The nutria’s relatively low reproductive rate help keep their numbers in check

What causes temperature extremes in the desert

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.