low Oxygen pollution
Microorganisms that live in water feed on biodegradable substances. When too
much biodegradable material is added to water, the number of microorganisms
increase and use up the available oxygen. This is called oxygen depletion.
When oxygen levels in the water are depleted, relatively harmless aerobic
microorganisms die and anaerobic microorganisms begin to thrive. Some anaerobic
microorganisms are harmful to people, animals and the environment, as they
produce harmful toxins such as ammonia and sulfides.
much biodegradable material is added to water, the number of microorganisms
increase and use up the available oxygen. This is called oxygen depletion.
When oxygen levels in the water are depleted, relatively harmless aerobic
microorganisms die and anaerobic microorganisms begin to thrive. Some anaerobic
microorganisms are harmful to people, animals and the environment, as they
produce harmful toxins such as ammonia and sulfides.
Chemical water pollution
Metals and solvents from industrial work can pollute rivers and lakes. These are
poisonous to many forms of aquatic life and may slow their development, make
them infertile or even result in death. Pesticides are used in farming to control weeds, insects and fungi. Run-offs of
these pesticides can cause water pollution and poison aquatic life.
Subsequently, birds, humans and other animals may be poisoned if they eat
infected fish. Petroleum is another form of chemical pollutant that usually contaminates water through oil spills when a ship ruptures. Oil spills usually have only a
localised affect on wildlife but can spread for miles. The oil can cause the death of many fish and stick to the feathers of seabirds causing them to lose the ability to fly.
poisonous to many forms of aquatic life and may slow their development, make
them infertile or even result in death. Pesticides are used in farming to control weeds, insects and fungi. Run-offs of
these pesticides can cause water pollution and poison aquatic life.
Subsequently, birds, humans and other animals may be poisoned if they eat
infected fish. Petroleum is another form of chemical pollutant that usually contaminates water through oil spills when a ship ruptures. Oil spills usually have only a
localised affect on wildlife but can spread for miles. The oil can cause the death of many fish and stick to the feathers of seabirds causing them to lose the ability to fly.
nutrients in water
Plants need nutrients to grow. And if the water has lots of nutrients the water will start to grow algea. And to much algea has many side affects. Algea can contaminate drinking water or clog water filters. Algea can damage aquatic life, because the algea absorbes all of the oxygen from the water. Leaving the other aquatic life with nothing to breathe and they will eventually suffocate. Nutrients can also make the water located there muddy, or sloppy. This happens only if the ground is very low in nutrients.