In an ecosystem with many similar species, we typically find
A) low levels of interspecific competition, mostly for food.
B) competitors using different resources to minimize interspecific competition.
C) intense interspecific competition mostly for suitable habitats.
D) adaptations for battles and intraspecific competition.
B
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Neo-Malthusians think that the greatest danger to the environment is
A) Marxism. B) politicians. C) population growth. D) computer technology. E) industrial agriculture.
A mineral that is not a silicate is
A. calcite. B. quartz. C. feldspar. D. mica.
Many dry cereals are fortified with iron, which is added to the cereal in the form of small iron particles. How might these particles be separated from the cereal?
A) add water and the iron particles will float to the top B) blend the cereal to a fine consistency and pass through a filter C) collect the iron filings with a magnet D) heat the cereal so that the iron particles melt and thereby coalesce
A ________ is an intrusive structure that formed from magma that solidified within the "throat" of a volcano.
A. volcanic neck B. diapir C. laccolith D. sill E. batholith