Per. 6 Ch. 8 Human Population Growth

Which of the following statements about human carrying capacity is the most likely true?

• We have exceeded our carrying capacity as exemplified by world hunger.

• Human technology has been responsible for periodically increasing the carrying capacity.

• The earth can probably support 40-50 billion people on a vegetarian diet.

• In all likelihood, human do not have a carrying capacity.

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Today the human population of Earth is

• more than 6.8 billion

• more than 7.8 billion

• less than 6.8 million

• less than 9 million

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If population and the demand for natural resources continue to grow at the present rate, the human population will be too large for Earth to support.

• true

• false

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

• growth rate

• infant mortality

• life expectancy

• death rate

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The study of human population statistics

• demography

• biology

• microbiology

• ecology

Life expectancy 

• The average number of years members of a population are likely to live.
• The average number of years members of a population are likely to die.

What factors affect life expectancy?

• Level of poverty

• Diet and nutrition

• Access to medical care

• all of the above

The anticipated human population by the year 2050 is about

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

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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.

Which of the following would most likely occur if a population exceeded the carry capacity of the environment?

• The birth rate would likely increase.
• Birth rate would be equal to the death rate.
• The death rate would increase.
• Immigration would increase.

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