Environment Pollution (4)

Science

Not quite remember

I easily remember

Example of eutrophication

The rapid growth of algae in water bodies containing an excessive supply of nitrate ions

Negative effect of eutrophication

Can reduced oxygen content in water that can cause the death of aquatic animals and plants

Biochemical Oxygen Demand (BOD) (2)

The higher the BOD of a water sample, the more microorganisms can be found in it

Procedure to measure level of water pollution in a water sample (1)

Can be determined by measuring the time taken for methylene blue solution to decolourise after being mixed with the water sample

Procedure to measure level of water pollution in a water sample (2)

When methylene blue solution is added to a contaminated water sample, the blue colour of the solution will decolourise rapidly

Procedure to measure level of water pollution in a water sample (3)

The higher the level of water pollution, the shorter the time taken for the methylene blue solution to decolourise

Purification Method for Contaminated Water using Green Technology

Use of Effective Microorganism Mud Balls (EM Mud Balls)

Effective microorganism mud balls (EM mud balls)

Type of microorganism that use as Effective Microorganisms (EM) (1)

Lactic acid bacteria such as Lactobacillus casei

Type of microorganism that use as Effective Microorganisms (EM) (2)

Photosynthetic bacteria such as Rhodopseudomonas palustris

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