Comets are thought to be composed of dust and tiny, icy particles encased in small, solidified, metallic fragments

Indicate whether the statement is true or false


FALSE

Environmental & Atmospheric Sciences

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The most obvious cause of industrial smog is ________

A) indoor air pollution B) fires for heating food C) generation of nuclear power D) burning fossil fuels E) burning trash

Environmental & Atmospheric Sciences

Alcohol consumption in Russia is a major health problem; in fact, average hard liquor consumption is five gallons per person (including children) annually

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Scientists use proxy records in climate research to determine ________

A) climates hundreds and thousands of years ago B) current levels of carbon dioxide C) changes in the ozone layer over the past 30 years D) changes in temperature over the past 100 years

Environmental & Atmospheric Sciences

Which volcanic type(s) can have pyroclastic ejections during eruptions?

A) Shield volcanoes B) Cinder cones C) Composite cones D) Cinder and composite cones E) Shield volcanoes, cinder cones, and composite cones

Environmental & Atmospheric Sciences