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Sameer Jahabarali Biology

Unit 5 Module 3- Ecosystem and sustainability






Ecosystem


An ecosystem is the interrelationship between biotic (living) and
abiotic (non-living) components. It is a dynamic system that is very
active where changes in one affect another. Factors that affect or
change the ecosystem are:

Biotic factors- factors affected…

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Sameer Jahabarali Biology

Unit 5 Module 3- Ecosystem and sustainability




Steroids to increase growth rate
Selective breeding, to increase growth rate, milk yield and egg production
Antibiotics, to prevent unnecessary loss of energy fighting pathogens
Prevention of grazing, to minimise energy loss of moving around and outdoors temperature loss



Successions…

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Sameer Jahabarali Biology

Unit 5 Module 3- Ecosystem and sustainability



Microbes perform an important role carbon and nitrogen cycle



Bacteria are needed to recycle nitrogen within the ecosystem. Nitrogen is unreactive component that
makes amino acids and nucleic acid. Nitrogen cycles between biotic and abiotic components in the ecosystem
and…

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Sameer Jahabarali Biology

Unit 5 Module 3- Ecosystem and sustainability



population, unless the habitat has a higher variety of species of prey and predators. This is because:

More predators, prey eaten
Less prey available, less predators eat and survive
Less predators, more prey accumulates
More prey, more predators eat an…

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