Populations

Front

What has been the general trend of human population since the Industrial Revolution?

Back

The human population has generally increased since the Industrial Revolution.

Front

What type of growth is typically described as logistic growth?

Back

Logistic growth describes a population that grows rapidly at first and then levels off as it approaches the carrying capacity.

Front

What is the term for the movement of individuals into an area?

Back

Immigration is the movement of individuals into an area.

Front

Which of the following is NOT a limiting factor for populations?

Back

Exponential growth is NOT an example of a limiting factor.

Front

What happens to the birthrate if a population exceeds its carrying capacity?

Back

If a population grows larger than the carrying capacity, the birthrate must fall.

Front

Define carrying capacity in the context of populations.

Back

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Front

What is emigration?

Back

Emigration is the movement of individuals out of a population or area.

Front

Explain the difference between density-dependent and density-independent factors.

Back

Density-dependent factors are influenced by population density (e.g., disease, competition), while density-independent factors affect populations regardless of density (e.g., natural disasters).

Front

What is the significance of limiting factors in population growth?

Back

Limiting factors prevent populations from growing indefinitely and help maintain ecological balance.

Front

What is exponential growth in populations?

Back

Exponential growth occurs when a population increases by a constant proportion over time, leading to a rapid increase.