Major public health risks for those living in large cities, especially in developing nations, are
A) mental health and respiratory diseases.
B) increased exposure to radioactive wastes.
C) higher rates of cancer and heart disease.
D) hearing and vision loss, lowered reproductive capacity.
A
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Secondary waves can travel through all areas of the Earth except the
A. inner core. B. mantle. C. outer core. D. surface.
Which of the following would be the first step in applying the scientific method to an environmental
geological problem? a. formulate a hypothesis b. create a map c. pose a question d. draw a conclusion e. analyze data
Biomass energy is energy contained in ________
A) the Earth's heat B) firewood and other plant material. C) the sun D) wind E) water
If two protons and two neutrons are removed from the nucleus of an oxygen atom, a nucleus of which element remains?
A. carbon-12 B. nitrogen-12 C. carbon-14 D. neon-18