APES Unit 3

Front

What happens to a population when it grows past the ecosystem's carrying capacity?

Back

The population starts to die off to return to carrying capacity.

Front

What type of survivorship curve describes organisms that tend to live long lives with a low death rate and a dramatic increase in death rate toward the end of their life expectancy?

Back

Type I

Front

How do you calculate the growth rate of a population given the crude birth rate (CBR) and crude death rate (CDR)?

Back

Growth Rate = CBR - CDR. For example, in 2004 China's CBR was 11.8 and CDR was 6.3, so the growth rate is 0.55%.

Front

What term describes how many individuals of different ages make up a population?

Back

Age Structure

Front

What stage of demographic transition is characterized by high birthrate and high death rate, resulting in a low total population?

Back

Stage 1

Front

What is the definition of carrying capacity in an ecosystem?

Back

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

Front

What is a Type II survivorship curve?

Back

A Type II survivorship curve indicates a constant death rate throughout the life span of the organism.

Front

What does a population pyramid illustrate?

Back

A population pyramid illustrates the age structure of a population, showing the distribution of various age groups.

Front

What is the significance of the demographic transition model?

Back

The demographic transition model explains the transition of a country from high birth and death rates to low birth and death rates as it develops.

Front

What factors can lead to a decrease in a population's carrying capacity?

Back

Factors such as resource depletion, habitat destruction, and environmental changes can decrease a population's carrying capacity.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4