When a hypothesis has survived extensive scrutiny and when competing ones have been eliminated, a hypothesis may be elevated to the status of a(n) ________
Fill in the blank(s) with correct word
scientific theory
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What forms heavy elements such as gold, mercury, and uranium?
A) A protostar B) Condensation C) A supernova D) A solar nebula
The niche of a species is the functional role of that species in the community that it belongs to
Species that have narrow niches (have very specific resource requirements) are said to be ________, while species that have broad niches (able to use a wide array of resources) are known as ________. A) Type 2 species; Type 3 species B) widespread; restricted C) r-selected species; K-selected species D) specialists; generalists E) generalists; specialists
The Nomadic Warrior Theory and the Sedentary Farmer Theory have been developed to explain the common ancestry of
A) the non-Romance branches of Indo-European languages. B) Romance Languages. C) Sino-Tibetan languages. D) Afro-Asiatic languages. E) Austronesian languages.
How is natural gas that is produced in Iran transported to the U.S.?
A. LNG tanker ships B. underwater pipelines C. large balloons D. trucks