The layout of regional crops and unit crops are fixed for a long time.
举一反三
- 3.____for a long time, most of the crops in this area died from lacking water. A: Being no rain B: There was no rain C: To be no rain D: There being no rain
- Water use efficiency refers to the ability of crops to produce biomass per unit of water discharged.
- As a title, " are transgenic crops safe" should be "Are Transgenic Crops Safe?"
- Which<br/>of the following crops are cross-pollinated crops () A: Rice B: Wheat C: Corn D: Rye
- Crops were damaged by the _________ .