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The nutrient cycles
Important nutrient cycles
Forestry and agriculture
The nutrient cycles - Quiz

The nutrient cycles - Quiz

Answer each question below, then choose Check answers to see your score. You can reveal the correct responses after marking.

1 About how many nutrients are essential to plant and animal life?

Eight - 8 Eighteen - 18 Eighty - 80 Seven Hundred and Eighteen - 718

2 What is a 'Macronutrient'?

A nutrient that a plant needs a lot of A nutrient that a plant needs little of Nutrients with extra-large molecules

3 What is a nutrient cycle?

A healthy vitamin drink for cyclists Nutrient exchanges in air, water, land and organisms The conversion of leaves into oil and gas Bioaccumulation of contaminants

4 Where do we find most phosphorus?

Cycling between air and sea Cycling between air and land Cycling between soil and vegetation Cycling between London and Bristol

5 When plants die, what happens to their nutrients?

They dry up and blow away They become recycled back into the soil They dissolve in water and evaporate

6 Where are the main nutrient cycles in tropical rainforests?

Between the thin topsoil and the vegetation Bwtween the vegetation and the air Between the jungle animals and the air Between water and the air

7 How do farmers influence the nutrient cycles?

They do not - the nutrient cycles are natural? By irrigating dry and thirsty crops By adding fertilisers to the soil By keeping fencing well maintained

8 What happens if it rains after fertiliser has been added?

Nothing, fertiliser sticks to the soil Fertiliser can evaporate and blow away Fertiliser can dissolve and flow into rivers

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