When farmers use _________________systems, typically 90-95% of the water input reaches the crops
Fill in the blanks with correct word
drip, microirrigation, trickle irrigation
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Complete the concept map by selecting the correct responses from the lists provided. 
Complete the concept map by selecting the correct responses from number 3.
A. Faults B. Epicenters C. Coasts D. Plate boundaries
Weathering by alternating freezing and thawing of water:
a. creates angular blocks of rock. b. dissolves granite. c. is called heaving. d. creates levees. e. creates new chemical substances.
Some solar radiation is absorbed at Earth's surface. Which of the following situations would result in the most absorption of incoming solar radiation at Earth's surface?
A. thin clouds over Antarctica B. thick clouds over the rainforest C. thin clouds over the rainforest D. thick clouds over Antarctica
A region has just had a 100-year flood. That means that
A. another equally large flood will occur in one hundred years. B. another flood of that size cannot happen in the same year. C. a flood event of that size has a 1 percent probability of occurrence in the next year. D. All of the choices are correct.