The idea that photosynthesis and respiration are in balance _______.
Fill in the blank(s) with the appropriate word(s).
Answer: describes major material (element) cycles created by earth
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Tides are capable of slowing the Earth’s rotation by the following force:a
Tidal friction b. Gravitational forces c. Resonance d. Centrifugal forces
Define service and briefly discuss the three different types of services
What will be an ideal response?
Why is there a greater concentration of calcite, halite, and gypsum in desert soils than in other soils?
A) The sand of the desert contains more of these minerals than soil-forming rocks in other regions do. B) The dry climate allows minerals to precipitate from solution while in wetter soils they would filter away. C) The dry earth allows minerals to come up to the surface while in wetter soils they would remain lower. D) The soils of the desert do not contain pores large enough to wash these minerals away when water comes in the form of rain.
Krypton-85 has a half-life of 10. years. Approximately what percentage of Kr-85 produced from the Chernobyl accident in 1986 still remains radioactive in 2010?
A) 25% B) 12% C) 6% D) 3%