Which of the following is NOT a source of atmospheric oxygen in the oxygen cycle?
A) The weathering of rocks
B) The burning of fossil fuels
C) Water from plant transpiration
D) Decomposition of water during photosynthesis
E) Decomposition of nitrogen by solar energy
Answer: E
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Which of the following best describes a two-molar sucrose solution?
A. one liter of solution that contains 2 moles of sucrose B. one liter of solution that contains 2 moles of water C. two liters of solution that contains 1 mole of sucrose D. one liter of solution that contains 6.02 × 1023 molecules of sucrose E. one mole of sucrose dissolved in 2 liters of solution
Although coal is a very plentiful fuel, when burned it produces very high ____________________ emissions
Fill in the blanks with correct word
What is Earth System Science?
• The study of the entire planet as a system of interrelated components • The study of the atmosphere • The study of population growth on Earth • The study of physical systems on Earth's surface
In preparation for the construction of a new large subdivision, over 500 acres of hilly forest are cleared. In this cleared region, we will expect that
A) more species of birds and insects will inhabit the region. B) a drainage system and landscaping will need to be designed to limit erosion. C) the overall productivity of the region will increase. D) the levels of carbon dioxide in the air will sharply decline.