Prescribed burns would be used in forests ________
A) where there high densities of endangered species, such as tropical rainforests
B) plagued with insects as a cheaper alternative to pesticides
C) that have heavy recreational use to warn people about the dangers of fires
D) that are subject to severe wildfires to remove fuel load and stimulate new growth
E) to convert primary forests into secondary forests
Answer: D
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Indicate whether the statement is true or false
Many predator-prey relationships do not result in the complete elimination of the prey because
A) predators cannot catch all of the healthy adults and will shift to other prey if one species is scarce. B) the predator population is limited by the availability of territorial space. C) a single species of prey does not provide enough nutrition. D) the prey populations are always far below carrying capacity.
What does the first law of thermodynamics tell us?
A. Doing work always creates heat. B. Altering matter is the best source of energy. C. Energy cannot be recycled. D. Energy is neither created nor destroyed. E. Energy cannot be converted.
Dangerous rapid mudflows around active volcanoes are known as _______________
Fill in the blank(s) with correct word