By international agreement, lesser tropical cyclones are given different names based on the strength of their winds. When a cyclone's strongest winds do not exceed 61 kilometers (38 miles) per hour, it is called a(n) ________
Fill in the blank(s) with correct word
tropical depression
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Command and control approaches to environmental regulation concentrate on enforcing cleanup instead of pollution prevention.
Answer the following statement true (T) or false (F)
When you buy a new computer, which of these is a hidden cost?
A. cost from the loss of natural services degraded by its manufacture B. cost of mining the metals used to make it C. cost to manufacture it in a factory in Indonesia D. cost of wages for under-paid shop associates at computer store
James Hutton put forth the fundamental principle of Uniformitarianism.
a. true b. false
Purple martins are the largest species of swallow in North America
In the Eastern United States, they breed almost exclusively in large colonies in artificial martin houses and hollowed-out gourds hung by martin enthusiasts, who often have to remove invasive house sparrows from these artificial nest sites in order for the martins to have a place to nest. The relationship between the martins and sparrows can best be described as ________, and the relationship between the martins and the martin enthusiasts can best be described as ________. A) predation; mutualism B) intraspecific competition; interspecific competition C) parasitism; symbiosis D) interspecific competition; mutualism