In soil sa______ with water, plant roots must live in an oxygen-deprived environment because all the air is displaced by water.
举一反三
- people are concerned about the environment issue because air and water
- According to the state of water in the soil, the liquid phase can be divided into ____, bound water, and free water.
- How is food for plants made Food for plants is made ______. A: from water B: from the air in the sky C: from the soil D: from water, things in the soil and air and sunlight
- This kind of plant()a lot of water at all times
- Water is 1) __________. We all need water.