What role may fire play in ecological succession and how may fire be used in the management of certain ecosystems?
What will be an ideal response?
Periodic fire will favor some species over others, just like any other abiotic limiting factor. Grassland and pine forests are ecosystems that depend upon fire. "Fire is being increasingly used as a tool in the management of" grasslands and pine forests. "In pine forests, if ground fires occur every few years, relatively little deadwood accumulates. With only small amounts of fuel, fires usually just burn along the ground, harming neither pines nor wildlife significantly." In forests where fires have not occurred for many decades, however, deadwood accumulates and if a fire does break out, it will almost certainly become disastrous.
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The world region that experienced the greatest increase of internally displaced persons (IDPs) in 2012—to almost six million—is
A) North America. B) Latin America. C) Africa. D) the Middle East. E) Asia.
Which of the following factors is most important in determining the strength of a tornado?
A. central pressure B. duration C. air temperature D. diameter
The aquatic ____________________ were porpoise-like reptiles, which probably gave birth to live young Fill in the blank(s) with the appropriate word(s)
Chemical methods to extract some usable energy from glucose molecules without using oxygen are possible and used by many organisms. However, cellular respiration reactions using oxygen are more common because using oxidative respiration
A) yields much more energy than anaerobic respiration. B) generates the water needed by most organisms to survive. C) provides carbon dioxide that is essential for photosynthesis. D) allows glucose to be stored instead of burned.