High levels of ____ could indicate life on other planets
a. free nitrogen
b. carbon dioxide
c. free oxygen
d. methane
e. ozone
c
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Which of the following sewage purification systems uses solar greenhouses and artificial marshes?
A. living machines B. compost toilets C. primary sewage treatment D. secondary sewage treatment E. septic tanks
Continentality results in a greater range between maximum and minimum daily and yearly temperatures
Indicate whether the statement is true or false
In what context (why) was the 2001 Hutchinson, Kansas gas leak explosion discussed in Chapter 1?
A. To illustrate the process of science in an actual situation. B. To contrast the characteristics of "good" and "bad" science. C. To illustrate the need for more safety measures at gas storage facilities.
What is heat?
A. average kinetic, internal energy of molecules B. energy transfer between different molecules C. only the energy radiated from combustion D. energy stored within an object’s molecules E. measurement of the “jiggling” of molecules