How does population density differ from population size?
When two species compete for the same ecological niche, they cannot coexist because they are competing for the exact same resources. One species is always slightly better adapted for the niche than the other, so over time the disadvantaged species will either go extinct or shift to a different ecological niche. This situation highlights the concept of _______.
Which of the following statements about tolerance range is true?
Identify the biotic limiting factor from the choices below.
Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?
In a particular environment there is plenty of food, water, cover, and space to support a large population of pheasants, but a larger quantity of predators are introduced. The predators become the _______ for pheasants in that environment.
A high birth to death ratio leads to smaller populations.
When population growth increases in an area, what is happening to the birth rate and age structure of that population?
Which of the following is not a factor in determining population size?
R-selected species have a short life span and an early reproduction cycle.
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