Which of the following diseases has been eradicated through modern medicine?

Which of the following diseases has been eradicated through modern medicine?

a. malaria
b. smallpox
c. sickle-cell disease
d. tuberculosis
e. HIV-AIDS

Which one of the following categories is not included in a list of prominent greenhouse gases?

a. carbon dioxide
b. methane
c. neon
d. ozone
e. chlorofluorocarbons

The case of Thomas Austin and his rabbits shows

a. that one man can plan to change a broad environment and use small elements to do it.
b. small changes in an ecosystem can be easily controlled using modern techniques.
c. even modern solutions can cause more problems.
d. that an environment is very resilient and can reorder itself in a few years.
e. rabbits and other native species in an environment mutate and cause difficulties.

According to the 2009 report of the Netherlands Environmental Assessment Agency, which country is the largest polluter of fossil fuels?

a. China
b. United States
c. Russia
d. India
e. Brazil

All of the following are part of an ecosystem except

a. chemicals.
b. plants.
c. animals.
d. humans.
e. All are parts of the ecosystem.

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Which of the following diseases has been eradicated through modern medicine?

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