The Hudson River has been polluted with ________ from a facility that manufactures electrical transformers
A) solid waste B) DDT C) PCBs D) peat E) coolants
C
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Often before sunrise on a clear, calm, cold morning, ice (frost) can be seen on the tops of parked cars, even when the air temperature is above freezing. This condition happens because the tops of the cars are cooling by:
a. conduction. b. convection. c. latent heat. d. radiation.
Which of the following health problems associated with UV exposure is also associated with thinning of Earth's ozone layer?
A) heart disease B) skin cancer C) skin irritations D) gastrointestinal disease E) headaches
A population is a group of different species that inhabit a specific area.
Answer the following statement true (T) or false (F)
How much are global surface temperature expected to increase by the year 2100 if humans replace much of today's fossil fuel combustion by new and more efficient technologies?
A) 2°C B) 2.5°C C) 3°C D) 3.5°C E) 4°C