Question

What do you mean by the following :
i. Sewage
ii. Eutrophication
iii. Recycling

Answer 1

Sewers are very crucial for keeping the urban environment safe and prohibit the spread of water‐borne diseases. Eutrophication causes crises in the food chain and influences animals that feed on them. Recycling is a very good way of reducing the pollution caused by waste.

Complete Answer:
Sewage : It is approximately $99.6\%$ water and the remaining $0.4\%$ mostly encompasses biodegradable pollutants and small solid particles. Sewers are very significant to prevent the spread of water‐borne diseases by transporting waste water safely to the wastewater treatment functions and through the conveyance of rain water from urban surfaces.
Eutrophication is the process in which the concentration of phosphorus, nitrogen, and other plant nutrients increases in a water body directing to abundant growth of simple plant life. This leads to an aging aquatic ecosystem such as a lake. Eutrophication is analyzed to be a significant environmental problem as it continually results in the corruption of water quality and the deficit of dissolved oxygen in water bodies.
Recycling is the process of collecting and processing substances that would otherwise be thrown away as garbage. These garbage are then converted into new products. This process can boost your society and the environment. It is very significant as waste has a huge adverse effect on the natural environment. Toxic chemicals and greenhouse gasses are discharged from rubbish in landfill areas. Recycling enables lessening the pollution induced by waste. Habitat devastation and global warming are some of the consequences of deforestation.

Note:
- Larger commercial and industrial customers are expected to treat their sewage to approved quality norms and required to install pre-treatment equipment before releasing it to the sewer.
- Eutrophic waters can ultimately become “dead zones” that are inadequate for aiding life. Aquatic ecosystems are home to various plant and animal life forms ; both simple and complex. The process of eutrophication disrupts the equilibrium in these ecosystems and vastly decreases the biodiversity of the ecosystem.
- Recycling is an essential ingredient of contemporary waste reduction and is the third ingredient of the "Reduce, Reuse, and Recycle" waste structure. Thus, recycling goals at environmental sustainability by transferring raw material inputs into and changing course waste outputs out of the economic network.