What explains the uneven distribution of the world's people?
A) physical environment
B) historical circumstances
C) technological developments
D) all of the above
E) physical environment and historical circumstances only
D
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Hazardous waste deposited in ponds or lagoons
a. may evaporate into the atmosphere b. may enter groundwater when there are no liners or when liners leak c. may contaminate surface water d. all of these answers e. none of these answers
Your hand feels cold when you hold a cold can of soda. Energy is being transferred from your hand to the can by
A) convection. B) conduction. C) radiation.
Which type of enzyme is important in DNA fingerprinting?
A) helicases B) ligases C) proteases D) restriction enzymes
Eutrophication caused by excess runoff of nitrate and phosphate fertilizer from farmland could be avoided by substitution of natural, organic fertilizers, like manures, for synthetic fertilizers.
Answer the following statement true (T) or false (F)