Population Growth Flashcard

Front

What is a population growth graph?

Back

A population growth graph is a visual representation of how the population of a certain species or group changes over time.

Front

If a small island nation starts with 100 people, 10 people immigrate, 20 emigrate, with a birth rate of 15 and a death rate of 5, what is the new population?

Back

No change; the population is still 100.

Front

What is a density-independent limiting factor?

Back

A density-independent limiting factor is a factor that affects population size regardless of the population's density, such as an earthquake.

Front

What happens to a population when it exceeds the carrying capacity of its environment?

Back

The population faces resource scarcity and may decline in size.

Front

Define carrying capacity.

Back

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

Front

What is immigration in terms of population dynamics?

Back

Immigration is the arrival of individuals into a population from other areas.

Front

What is emigration in terms of population dynamics?

Back

Emigration is the departure of individuals from a population to other areas.

Front

What is the difference between birth rate and death rate?

Back

Birth rate is the number of live births per 1,000 individuals in a population per year, while death rate is the number of deaths per 1,000 individuals in a population per year.

Front

What is a density-dependent limiting factor?

Back

A density-dependent limiting factor is a factor that affects population size in relation to the population's density, such as competition for resources.

Front

What is exponential growth in population dynamics?

Back

Exponential growth is a rapid increase in population size when resources are abundant, leading to a J-shaped growth curve.