Geologist use a scratch -test to determine the hardness of a mineral called the ____ scale
What will be an ideal response?
Mohs
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Which of the following is the best description of the first law of thermodynamics?
a. Atoms cannot be created or destroyed. b. Energy input always equals energy output. c. Heat is a form of kinetic energy. d. Solar energy is converted into chemical energy in living systems. e. All of these answers apply to the first law of thermodynamics.
Plankton are small animals and plants that float passively in the marine environment
a. True b. False
What category of solid waste comprises the largest single proportion of municipal solid waste in the United States?
A) food waste B) plastics C) paper and paper products D) yard waste
The origin of tsunamis is associated with ________.
A) tides B) storms C) undersea tectonic events D) wind E) pressure gradients