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II. Complete the following article by writing each missing word in the correct box on your answer sheet. Use only ONE word for each space.
Global warming may be threatening one of the world’s most important crops: rice. Increased nighttime temperatures are associated with significant declines in crop (1) ______, according to a study conducted by researchers at the International Rice Institute. The researchers analyzed twelve years of rice production along with twenty-five years of temperature data. This study, a direct measurement of yields produced under normal field conditions, using (2) ______ that good farmers normally employ, has confirmed previous simulations and suggests that (3) ______ increases due to global warming will make it increasingly difficult to feed the Earth’s growing population. Average (4) ______ temperatures, which increased 0.35 degrees Celsius over the (5) ______ of the study, have little effect on rice production. However, a strong correlation exists between warmer nighttime temperatures, which have risen an average of 1.1 degrees, (6) ______ decreasing rice yields. Although the underlying (7) ______ of this relationship is unknown, researchers speculate that plants work harder to maintain themselves in (8) ______ to the
warmer nights and consequently divert energy from growth. Thus, an average (9) ______ of just one degree Celsius can (10) ______ in a ten percent reduction in yields. Similar findings have been reported for corn and soybean yields in the United States.
Global warming may be threatening one of the world’s most important crops: rice. Increased nighttime temperatures are associated with significant declines in crop (1) ______, according to a study conducted by researchers at the International Rice Institute. The researchers analyzed twelve years of rice production along with twenty-five years of temperature data. This study, a direct measurement of yields produced under normal field conditions, using (2) ______ that good farmers normally employ, has confirmed previous simulations and suggests that (3) ______ increases due to global warming will make it increasingly difficult to feed the Earth’s growing population. Average (4) ______ temperatures, which increased 0.35 degrees Celsius over the (5) ______ of the study, have little effect on rice production. However, a strong correlation exists between warmer nighttime temperatures, which have risen an average of 1.1 degrees, (6) ______ decreasing rice yields. Although the underlying (7) ______ of this relationship is unknown, researchers speculate that plants work harder to maintain themselves in (8) ______ to the
warmer nights and consequently divert energy from growth. Thus, an average (9) ______ of just one degree Celsius can (10) ______ in a ten percent reduction in yields. Similar findings have been reported for corn and soybean yields in the United States.
