If a population grows larger than its environmental carrying capacity, then

• death rate may rise

• death rate may fall significantly

• birth rate may rise significantly

• immigration rate may increase

What does the term carrying capacity describe?

• The maximum number of birth rates for a population

• The ability of a population to accept new immigrants

• The ratio of birth rates to death rates in a population

• The population size that the environment can sustain

In recent years, the human population has

• increased exponentially

• decreased exponentially

• decreased slowly

• increased slowy

The most populous country in the world

• China

• India

• US

• Brazil

The number of babies out of 1,000 that die during their first year of life is called

• infant mortality

• growth rate

• demography

The number of deaths per 1000 people in a geographical area is

• Death Rate

• Birth Rate

• Fertility rate

• Migration rate

Malthusian Theory on population was proposed by

• Thomas Malthus

• Arthur Malthus

• Joshua Malthus

• Regen Malthus

Acquired Immuno Deficiency Syndrome was recognized in the year

• 1981

• 1986

• 1994

• 1947

The CD4 cell count of an HIV infected person is

• less than 200 per micro liter of blood

• greater than 200 per micro liter of blood

• 200 < CD4 cell count > 1000

Which drug is taken during pregnancy, to avoid transmission of HIV from mother to child?

• Azidothymidine(AZT)

• DMT

• GHB

• Psilocybin