Some activities which pollute the water sources are
a) Dumping of effluents by industries
b) Sewage water released into the rivers
c) Rainwater draining into rivers and lakes
d) Human activities like open defecation, washing clothes etc. in river/pond etc.
Answers
Explanation:
Industries produce a tremendous amount of waste, which contains toxic chemicals and pollutants, causing air pollution and damage to our environment and us. They contain harmful chemicals, including lead, mercury, sulfur, nitrates, asbestos, and many others.Many industries, not having a proper waste management system, drain the waste in the freshwater, which goes into canals, rivers, and later into the sea.The toxic chemicals may change the color of water, increase the number of minerals, called eutrophication, change the temperature of the water, and pose a severe hazard to water organisms.The sewage and wastewater that is produced in each household are treated chemically and released into the sea along with fresh water. The sewage water carries pathogens, a typical water pollutant, other harmful bacterias, and chemicals that can cause serious health problems and thereby diseases.Microorganisms in water are known to cause some of the very deadly diseases and become the breeding grounds for creatures that act as carriers. These carriers inflict these diseases onto an individual via various forms of contact. A typical example would be Malaria. The garbage produced by households in the form of paper, plastic, food, aluminum, rubber, glass, is collected and dumped into the sea in some countries. These items take 2 weeks to 200 years to decompose.Chemical fertilizers and pesticides are used by farmers to protect crops from insects and bacterias. They are useful for the plant’s growth. However, when these chemicals are mixed up with water, they produce harmful pollutants for plants and animalsAs the population has grown exponentially, so has the demand for housing, food, and cloth. As more cities and towns are developed, they have resulted in increasing use of fertilizers to produce more food, soil erosion due to deforestation, rise in construction activities, inadequate sewer collection and treatment, landfills as more garbage is produced, increase in chemicals from industries to produce more materials.Water pollutants include both organic and inorganic factors. Organic factors include volatile organic compounds, fuels, waste from trees, plants, etc. Inorganic factors include ammonia, chemical waste from factories, discarded cosmetics, etc.