Several ecology students were tracking the population ranges of two species of squirrels that live in the Cascade Range of Oregon
These students noted that when both species of squirrels were present in a region, species A could be found from sea level to about 900 feet above sea level, and species B could be found from about 900 feet to 1,500 feet above sea level. However, when species B was found alone, it had a range of about 500 feet to 1,500 feet above sea level. This is an example of
A) predator avoidance.
B) coevolution.
C) habitat fragmentation.
D) competitive exclusion.
E) parasitism.
D
You might also like to view...
What other information is related to the question? Which information is most useful?
What will be an ideal response?
Parental care of the young is usually associated with species with a type ________ survivorship curve.
A. I B. II C. III D. I or II (depending on the sex ratio) E. I or III (depending on whether the reproductive strategy is iteroparous or semelparous)
In a single strand of DNA, nucleotides are connected by which type of bond?
A. ionic B. phosphodiester C. purine D. hydrogen E. peptide
Which of the following parasites is the major parasitic cause of deaths worldwide, yet its transmission could be prevented by access to clean water?
A. Cryptosporidium parvum B. Giardia intestinalis C. Cyclospora cayetanensis D. Entamoeba histolytica