Water use efficiency refers to the ability of crops to produce biomass per unit of water discharged.
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- Enough sunshine and water ________ crops to grow better.
- Paragraph 1（） A: Ounces of Water Needed Per Day B: Importance of Water C: Composition of Water D: Signs of Dehydration E: Supply of Water F: Necessity for Bringing a Bottle for Water with You
- In a disk-type lubricating oil purifier, ____. A: The purifier driving gears are lubricated by the reclaimed B: Oil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling water C: Sealing water must never be supplied until after oil is fed to unit D: Deterioration of the bowl ring gasket will cause the purifier to lose its water seal
- How much water will be consumed to produce a hamburger?
- Water saving farming should be actively developed in order to improve water use _______.
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In order to raise the efficiency of the water supply, measures should be taken to ____________.
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Farmers use water in many ways.（） they use water to grow crops. A: In fact B: For example C: Besides D: Because of thi
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It is said that there will be______soon. A: Africa once again B: a rational use of water C: limited allotments of water D: a national concern about water
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Pollution refers primarily to the of air, water, and land by wastes._
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The combined effects of mass wasting and running water produce stream valleys.