How is the atmospheric O2 content maintained at its current level?
What will be an ideal response?
There are a few potential feedback mechanisms for keeping O2 constant, but the most plausible one involves the burial of organic carbon and C:P ratios in surface waters. In this feedback, increasing oxygen production leads to increased oxygen concentration in deep waters, which lowers the C:P ratio in sediments, allowing less organic carbon burial (through higher rates of respiration) and less net O2 production, thus returning the system to its equilibrium point.
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What are some of the industries that were transformed by the Industrial Revolution?
What will be an ideal response?
Smaller north-south temperature contrasts are associated with slower jet stream flow
Indicate whether the statement is true or false
Earthquakes associated with human activity, such as waste water injection wells, are known as induced seismicity
Indicate whether the statement is true or false
Which of the following characterizes a tropical savanna climate?
A) It experiences a summer wet season. B) Its annual temperature variability is less than that of the tropical rain forest. C) The suns direct rays are overhead (subsolar point) twice each year. D) It is dominated by the ITCZ for nearly 12 months of the year. E) All months receive precipitation in excess of 6 cm (2.4 in.).