Ch 15 Mastering Biology

When did the global human population first reach 1 billion?

1800 CE

Which is true about human populations as they move from a less developed to a more developed stage?

A decline in birth rate lags a decline in death rate.

What type of line represents exponential growth on a graph of population change over time?

A steep, nearly vertical segment

In a city with 86,293 people, 1853 citizens died and 1472 babies were born in one year. What is the current growth rate of the city?

Approximately - 0. 4%

True or False: Every natural population eventually reaches its carrying capacity within its habitat.

False

How could better health conditions lead to a decrease in population growth?

If parents know their children may survive to adulthood, they are likely to have fewer children.

What was true about the size of the human population in 2015?

It had more than doubled since 1965.

What shape does the graph of exponential growth take?

J

True or False: A population can grow to be larger than the carrying capacity of the environment.

True

True or False: Low human birth rates are correlated with populations in which income and female literacy are high.

True

Boulevard trees in a city are usually planted so that one tree is placed in front of each house. Which kind of distribution do boulevard trees have?

Uniform

How have scientists estimated how large the human population was thousands of years ago?

by using archeological records

exponential growth

increase in the size of a population without limit

demographic study

looks at the statistical characteristics of a human population, such as birth and death rates

popula-

multitude

logistic growth

occurs when a population confronts limited resources

demo-

people

logo-

proportion or ratio

expo-

to out forth