Many populations that interact with one another at a particular location form a ____
A) niche
B) habitat
C) community
D) genus
C
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An element has two different isotopes: one that weighs 65 amu and another that weighs 67 amu. If the average atomic mass of all the isotopes is 66.5 amu, what can be said about the relative abundance of the isotopes?
A. All the isotopes have the same relative abundance. B. The isotope with the mass of 66.5 is more abundant than the isotope with the mass of 67. C. The isotope with the mass of 66.5 is more abundant than the isotope with the mass of 65. D. The isotope with the mass of 67 is more abundant than the isotope with the mass of 65. E. The isotope with the mass of 65 is more abundant than the isotope with the mass of 67.
Fossil evidence suggests that such land-dwelling arthropods as _____ had evolved by at least the Devonian
A)trilobites B)molluscs C)scorpions D)beetles E)spiders
The rate of movement in creep is usually ________.
A. a centimeter or less per year B. a centimeter or so per week C. around a meter per hour D. around a meter per day E. a centimeter or so per day
What sport is loved by children and played by their heroes Yaya Toure and Didier Drogba?
A) basketball B) soccer C) surfing D) track and field E) baseball