A species of fish is found to require a certain water temperature, a particular oxygen content of the water, a particular depth, a rocky substrate on the bottom, and a variety of nutrients in the form of microscopic plants and animals to thrive. These requirements describe its 

#Question id: 15723

#Section 2: Evolution

#Question id: 9214

#Section 2: Evolution

Researchers have been studying a rare population of 87 voles in an isolated area. Ten voles from a larger population were added to this isolated population. Besides having ten additional animals, what benefits are there to importing individuals?

#Question id: 10580

#Section 1: Ecology

What are parameters at Y axis in graph, where N is population size and K is carrying capacity?

#Question id: 11410

#Section 5: Applied Ecology & Evolution

Biodiversity hot spots, those areas with the greatest number of endemic species. Which of the following criteria to qualify as a hot spot region?

A. It must contain at least 1,500 species of vascular plants as endemics

B. It must have lost at least 70% of its original habitat

C. It must contain at least 500 species of bird species

D- It must contain high numbers of species

#Question id: 10734

#Section 1: Ecology

This term is a measure of the ability of a system to resist change in the face of outside influences.