Which of the following statements defies the first law of thermodynamics?
A) Autotrophs such as plants produce energy that is consumed by heterotrophs.
B) When coal is burned in a power plant, some of the energy escapes as heat rather than being converted to electricity.
C) When we build a campfire, the energy stored in the molecules in the wood is released as thermal energy.
D) We can decrease the amount of entropy in our dorm room if we use energy to get things organized.
A
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A labor-intensive industry is one in which wages and other compensation paid to employees constitute a very small percentage of expenses
Indicate whether the statement is true or false.
The first trophic level in a hydrothermal vent community is ________.
A. dependent on organic material drifting down from the surface B. made up of clams and tube worms C. seriously polluted D. dependent on bacteria and their ability to use hydrogen sulfide E. provided by larvae drifting in deep-sea currents
On this map of the south Atlantic, why is the mid-ocean ridge in the center of the ocean?
A. Subduction has occurred under one and then another of the adjacent continents. B. Seafloor spreading has stopped in this area. C. Seafloor is added to both sides during seafloor spreading. D. Subduction is consuming seafloor beneath both adjacent continents.
A low-tide terrace forms ________.
A. along the trough B. seaward of the offshore bar C. next to the lower beach scarp D. between high and low water E. below the beach face