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Card 6
Front
Why is humus (partly decomposed animal and plant waste) important to living organisms?
Back
Card 7
Front
What do earthworms do in soil to improve structure and fertility?
Back
Card 8
Front
How does draining and aerating soil help some organisms?
Back
Card 9
Front
Why is neutralising soil important?
Back
Card 10
Front
Who was the first person to understand the importance of earthworms?
Back
Card 11
Front
What are the advantages of living in water?
Back
Card 12
Front
What are the disadvantages of living in water?
Back
Card 13
Front
Explain what might happen to organisms in freshwater and salt water.
Back
Card 14
Front
Describe how a contractile vacuole controls excess water
Back
Card 15
Front
What are phytoplankton and zooplankton?
Back
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