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Sauron [17]
3 years ago
5

If you live on a river delta or coastline, you may not be able to eat the local shellfish because of high levels of toxins prese

nt in the water. Why?
Biology
1 answer:
ch4aika [34]3 years ago
3 0

Answer: Shell fish is used as a biological indicator of pollution.

Explanation:

The clams, mussels and shellfishes are some of the organism which can be used as a biological indicator of the pollution.

This is so because they have the ability to filter and concentrate the pollutants such as pesticides, and other pollutants in water.

These organisms can be toxic to people as it includes pollutants. This can be a early warning that the nearby water is getting highly polluted.

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The foreshore, also called intertidal zone, is the tidal zone of the tides on the coast. The alternation of the tides which discover more or less the substrate according to the phases of the Moon determines the conditions of humidity, salinity and temperature of the foreshore.

These variations lead to a vertical ecological structuring of the foreshore in so-called supralittoral, mediolittoral and infralittoral stages. The floristic and faunistic stands of these stages are distinct, according to the requirements of organisms in water, salinity and temperature. Therefore it would be beneficial for organisms living in this period that it can live without depending on the water present in their environment since the presence of the latter is inconstant.

The foreshore is divided into several floors that correspond to different ecological conditions. These coastal stages are defined by the duration of their emergence and therefore by the level of the different tides.

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