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Leaving certificate biology
Unit 1Ecology theory5 Topics|1 Quiz
Nutrient recycling4 Topics|1 Quiz
Ecological relationships and population dynamics2 Topics
Human impact on the ecosystem2 Topics
Study of a grassland ecosystem3 Topics
Responses in the Flowering Plant4 Topics|1 Quiz
Unit 3Sexual reproduction in the flowering plant1 Topic
The human reproductive system3 Topics
The menstrual cycle2 Topics
The circulatory system4 Topics
The heart5 Topics
Lesson 2, Topic 1
What is nutrient recycling ?
- Nutrient recycling is the movement of essential elements from the abiotic environment into living organisms, and then returning to the abiotic environment to be used again
Why is nutrient recycling important ?
- Nutrient recycling ensures that nutrients are never depleted but are reused again and again
How are nutrients returned to the environment?
Nutrient are returned to the environment by:
- Decomposition by microorganisms