A probability forecast that calls for a "40% chance of rain" means that ____
A) there is a 40% chance that it will not rain within the forecast area
B) there is a 40% chance that any random place in the forecast area will receive measurable rainfall
C) it will rain on 40% of the forecast area
D) it will rain 40% of the time over the forecast area
B
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What best describes the headwaters of a drainage basin?
A. collection of small channels in the upper part of a basin that merge into larger streams. B. collection of streams that empty into a body of water. C. those parts of a drainage basin that lie above base level. D. those parts of a drainage basin where groundwater discharge into streams. E. those parts of a drainage basin where water infiltrates into the groundwater system.
Which of the following determines blood type A in the ABO blood typing system?
A) the presence of only N-acetyl-D-galactosamine antigen B) the presence of only D-galactose antigen C) the presence of both N-acetyl-D-galactosamine and D-galactose antigens D) the absence of both N-acetyl-D-galactosamine and D-galactose antigens
Instructions: Choose one answer from each pair of selections. Farmers can protect crops from cold temperatures at night by planting crops at the BOTTOM or on the HILLSIDES of valleys
When stepping along a floor, the forces acting on your foot when it meets the floor are
A. friction, your weight, and the normal force. B. friction and the normal force. C. your weight and the normal force. D. all of the above