Individuals homozygous for Tay-Sachs alleles are healthier than heterozygotes
a. True
b. False
Indicate whether the statement is true or false
False
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One of the differences between wild wheat and domesticated wheat is that the domesticated species of wheat has brittle rachis
Indicate whether the statement is true or false.
Object placement is considered a form of visual communication
a. True b. False Indicate whether the statement is true or false
The slash-and-burn method requires _____
a. an extensive land use system with a lengthy fallow period b. the use of purchased fertilizers to put nutrients back in the soil c. low biomass, so there is not much to interfere with planting d. the use of tractors or draft animals, minimizing the need for a labor force e. the use of domesticated animals for plowing
According to modernization theorists, the primary impediments to economic development are __________
A. foreign investment and exchange B. poor nutrition and health care C. cultural values and traditionalism D. international relief agencies