Exam 2 Flashcards
1
Q
energy
A
the capacity to do work; the amount of work that can be performed by a force
2
Q
coal
A
around 30%
90% of coal production is used to make electricity, also make steel
3
Q
humus
A
dark, more or less stable art of the organic matter of the soil so well decomposed the original source can’t be identified
4
Q
petroluem
A
a naturally occurring complex liquid of hydro-carbons that after distillation yield a range of combustible fuels, petrochemicals, and lubricants- all derived from marine plankton
5
Q
A
