population pyramids

In 5 sentences or more, how prepared were you for the quiz on Friday. What were some areas you think you did really well on? What areas do you think you could improve on?

Have your food webs out and ready to turn in. Make sure your name and block are on it.

Reminderpopulation is a group of the same

species living together

Graph of a country’s population Based on

AgeMales/Females

Population pyramids are also a way to predict population growth Can monitor how different age groups grow

over time

Video of changing US population pyramid

Rapid Growth Slow growth Negative Growth

Pyramid like More youth than elderly More common in developing nations Usually high birth rate and high death

ratesWhy?

Examples:Mexico, India, Haiti

Levels are more equal than rapid growth pyramid

More common in established nations Long life expectancy Examples

United States

Marked by large elderly population Low birth rates, low death rates Opposite pyramid of rapid growth

Examples:Germany, Italy