________ is movement in a fluid, caused when part of the fluid (whether gas or liquid) is heated. The heated portion expands and becomes less dense, rising up through the cooler portion
A) Conduction
B) Convection
C) Advection
D) Radiation
E) Convention
Answer: B
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Viruses
A. do not evolve. B. are not affected by antibiotics. C. are not transmitted in body fluids or air. D. cause malaria. E. are a result of multidrug resistant TB.
The Malay Peninsula is shared by these two countries
A. Malaysia and Indonesia B. Indonesia and Thailand C. Myanmar and Indonesia D. Malaysia and Thailand
Which of the following demonstrates the correct order of the phases involved in a lightning stroke?
A) step leaders, return stroke, separation of charges, flow of negative charge into ground, dart leader B) dart leader, charge separation, flow of negative charge into ground, step leaders, return stroke C) charge separation, dart leader, step leaders, flow of negative charge into ground, return stroke D) charge separation, step leaders, return stroke, flow of negative charge into ground, dart leader
Cultural eutrophication cannot be prevented by ____.
A. banning the use of phosphate detergents B. preventing runoff of fertilizer from agricultural fields C. advanced waste treatment D. harvesting excess weeds E. soil conservation and land-use controls