Populations and Communities Unit review

Front

What are density-independent factors?

Back

Factors that affect population size regardless of the population's density, such as natural disasters, climate changes, and human activities.

Tags

NGSS.HS-LS4-5

Front

What is an example of a density-dependent factor?

Back

Less space, as it affects population growth when the population density is high.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Front

What does a population pyramid represent?

Back

A graphical representation of the age structure of a population, showing the distribution of various age groups.

Front

What does rapid growth in a population pyramid indicate?

Back

A high number of young individuals, suggesting a growing population.

Front

What is population density?

Back

The number of individuals living in a given area, typically expressed as individuals per unit area.

Front

What happens to prey populations when predator populations increase?

Back

Prey populations typically decrease due to increased predation.

Tags

NGSS.MS-LS2-4

Front

What age group is represented at the bottom of a population pyramid?

Back

The children, indicating the younger population.

Front

What is the significance of the carrying capacity in an ecosystem?

Back

The maximum population size that an environment can sustain indefinitely without degrading.

Front

What are biotic factors in an ecosystem?

Back

Living components that affect population dynamics, such as competition, predation, and symbiosis.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Front

What are abiotic factors in an ecosystem?

Back

Non-living components that influence population dynamics, such as temperature, water, and nutrients.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4