Tribes and chiefdoms both have centralized leadership
Indicate whether the statement is true or false
F
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Hunter-gatherers tend to preserve their resource base and have a limited impact on the environment because
A) they exploit a wide variety of foods. B) they are mobile, and therefore do not exhaust resources at any one place. C) they have low energy requirements. D) their population density is low. E) all of the above.
Microevolution refers to:
A. any change in the frequency of alleles in the gene pool of a population B. only changes that occur because of natural selection C. only changes due to mutations D. the evolution of new species
What does Mendelian genetics study?
A. changes in gene frequencies in breeding populations B. the ways in which chromosomes transmit genes across generations C. how nuclear DNA transmits information to other parts of the cell D. evolution in pea plants E. phenotypic mutations
Deforestation helps cool the planet by allowing more sunlight to be reflected back into space
Indicate whether the statement is true or false.