European explorers traveled from island to island decimating islanders and disrupting their cultures
Indicate whether the statement is true or false
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In a frontier economy, there is usually a relative abundance of ________ because of the inefficiency ________.
A. Labor; and lack of experience of workers B. Capital (money); of the market economy at this first stage C. Natural resources; of the procedures for gaining access to resources D. Technology; of the processes to research and develop new technology E. Social resources; of transportation
Type I populations are typically associated with
A) exponential growth. B) short life expectancy. C) the production of many "inexpensive" offspring. D) large bodies.
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) The isotope with the mass of 67 is more abundant than the isotope with the mass of 65. B) The isotope with the mass of 65 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 67. D) The isotope with the mass of 66.5 is more abundant than the isotope with the mass of 65. E) All the isotopes have the same relative abundance.
Wet-rice cultivation needs to take place on flat land because
A) large-scale machinery is used. B) the fields are flooded part of the year. C) major highways are the main means to get the crop to market. D) hillside fields would erode.