Explain what you think E. O. Wilson meant when he said, "The first animal species to go are the big, the slow, the tasty, and those with valuable parts such as tusks and skins."
What will be an ideal response?
Some species are inherently vulnerable to human activity and therefore vulnerable to extinction. Large animals are not only more visible, hence easier to find, they may serve as "trophy" species. Fast animals may be able to elude the hunter or trapper, slow animals become easy prey. An animal that is tasty is one that will be in great demand for food and therefore under constant pressure. And those with valuable parts will be vulnerable to both legal and illegal pressure to provide their parts for the market.
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Thick deposits of Silurian evaporites are important sources of various _______________
Fill in the blank(s) with correct word
What is the quaternary period?
A) the period when Earth began. B) the last geologic era. C) the first geologic era. D) the present geologic era.
Distinguish between a mineral species and a mineral variety.
a. Mineral species differ from each other only in color, whereas mineral varieties differ from each other in color and internal structure. b. A mineral variety, which is a single type of mineral that varies due to the impurities that it contains, is a subsection within a mineral species, which is a collection of mineral specimens that exhibit similar internal structures and chemical compositions. c. Mineral varieties are assigned to mineral classes, whereas mineral species are subgroups of mineral varieties. d. Mineral species are differentiated solely by mineral composition, whereas mineral varieties are differentiated solely by mineral structure. e. A mineral species, which is a single type of mineral that varies due to the impurities that it contains, is a subsection within a mineral variety, which is a collection of mineral specimens that exhibit similar internal structures and chemical compositions.
The maximum distance people are willing to travel for a service is
A) hinterland. B) range. C) threshold. D) median. E) meridian