Population Ecology: How We Saved the Bald Eagle: Crash Course Biology #7

What is the primary focus of population ecology?

• The interactions between different species in an ecosystem.

• The study of a single species' response to its environment.

• The flow of energy and nutrients within a community.

• The global distribution of all living organisms.

By 1963, how many bald eagle mating pairs were documented in the United States, indicating the species was on the verge of extinction?

• Over 1000

• Approximately 750

• Only 417

• Less than 100

What term in population ecology refers to the number of organisms in a specific area, indicating how close together or spread out the population is?

• Demographics

• Dispersion

• Density

• Distribution

Which type of dispersion pattern describes individuals grouping together in small clusters, often seen in animals like rural coyotes?

• Random dispersion

• Uniform dispersion

• Clumped dispersion

• Even dispersion

What was one of the initial reasons for the decline in bald eagle populations?

• Lack of food resources

• Farmers shooting them near livestock

• Natural predators

• Climate change

What does the term "demographics" refer to in population studies?

• The study of population growth and shrinkage

• Information about who makes up a population, including age, sex, and offspring potential

• The mathematical models used to predict population changes

• The interaction between different species in an environment

What type of population growth is characterized by a rapid increase in population size due to unlimited resources and no natural predators?

• Logistic growth

• Stable growth

• Exponential growth

• Declining growth

What is the term for the maximum population size that a specific environment can sustain over a long period?

• Growth rate

• Population density

• Carrying capacity

• Biotic potential