Population Growth

Today the human population of Earth is

• more than 10 billion

• more than 6.7 billion

• less than 7 million

• less than 9.9 million

Today the growth rate of the human population is decreasing.

• true

• false

How a population changes in size during a specific period of time...

• growth rate

• infant mortality

• life expectancy

• death rate

The amount of babies born per 1000 in a population

• death rate
• birth rate
• immigration 
• emigration

_______________ is the clearing of forests on a massive scale.

• Delimbing
• Reforestation
• Deforestation
• Detreeing

What is mortality rate?

• Measure of the number of deaths in a particular population

• Measure of fertility

• Life expectancy

• Measure of the number of births in a particular population

About 500 years ago, the world’s population started

• decreasing.
• to reach carrying capacity.
• growing more rapidly.
• to level off.

Tags

NGSS.MS-ESS3-4

The anticipated human population by the year 2050 is about

• 7.8 billion.
• 9 billion.
• 9 trillion.
• 78 billion.

Tags

NGSS.MS-ESS3-4

What three factors can affect ANY population's growth rate?

• Birthrate, death rate, migration
• disease, predation, migration
• medicine, agriculture, industry
• life expectancy, sanitation, vaccines

Tags

NGSS.MS-LS2-4

In a given population, the birth rate is equal to the death rate. Which of the following would be a true statement about this population?

• The population is growing exponentially.
• The population is decreasing in size.
• The population is remaining constant in size.
• The population is increasing in size.