Which fossil fuel is the dirtiest to burn?

A. oil
B. natural gas
C. coal
D. wood
E. biomass


Answer: C

Environmental & Atmospheric Sciences

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Which of the following best describes the physical region known as the taiga?

A. subtropical vegetation, with poor soils B. a zone of extensive desert and scrub vegetation C. a vast grassland, containing extremely fertile soils D. a zone of coniferous forest

Environmental & Atmospheric Sciences

A smaller solar zenith angle means sunlight has to travel through less atmosphere than if the solar zenith angle were larger

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

The downward plunge of cold lithosphere accounts for the existence of oceanic trenches as well as their low hear flow.

a. true b. false

Environmental & Atmospheric Sciences

The energy density of uranium-235 fuel is higher than the energy density of coal.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences