Visibility generally improves after a rain storm
Indicate whether the statement is true or false
True
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Which of the following might be considered a viable application of a radioactive tracer?
A. embedding a radioactive plug in a valuable necklace so that its location can be determined using a Geiger counter B. adding a stream of radioisotopes to waste water to examine where pollution goes when it flows into the ocean C. placing radioactive sources around a room to trace the location of people as they move through the room D. all of the above E. none of the above
The water table is the surface in the ground above which pores contain mostly air, and below which pores are filled with water.
a. true b. false
The Mediterranean climate is also called the ____
a. ?humid subtropical (Cfa) b. ?marine (Cfb) c. ?humid continental with hot summers (Dfa) d. ?dry-summer subtropical (Cs) e. ?semi-arid (BS)
No-till farming would be most beneficial for farmers ________
A) who typically experience minimal soil erosion B) using contour strip cropping C) who plant a cash crop every third year D) with steeply sloped fields E) whose cropland is in the Conservation Reserve Program