This consequently harms human health and the natural environment. Various factors have been associated with water pollution as causes of the environmental issue. Water Pollution - People, and all living organisms, need food, water, and oxygen. Water pollution affects plants and organisms living in these bodies of water; and, in almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities. Air pollution causes _____ (a) Global warming (b) Respiratory Problems (c) Soil erosion (d) None of these 2. Types of water pollution There are many types of water pollution because water comes from many sources. Water pollution. Here are a few types of water pollution: 1. Questions :- 1. Of this only 3.5% is fresh water which is suitable for human use. Water pollution takes place when pollutants are released directly or indirectly into bodies of water without sufficient treatment to eliminate damaging compounds. So we humans and all the living beings on earth’s surface should rely only on this 3.5% of water. Water pollution Water pollution results from disposal of wastes into water storage bodies and sources. The most common cause of water pollution is the direct disposal of industrial and human waste into the surface water. Unfortunately, water pollution throughout the world can be a problem for people and living organisms in need of safe drinking water. Water pollution is dirty, unsafe water and cannot be used for drinking. 7.3 Water Pollution The global water crisis also involves water pollution. If they end up in water bodies, they encourage algae and weed growth in the water. The remaining portion in the oceans is unfit for man. lakes, rivers, oceans and groundwater). affects drinking water, rivers, lakes and oceans all over the world. Water pollution occurs when harmful chemicals or microorganisms are released into water bodies, which results in the degradation of animal and human’s life quality. Water makes an approximate of 71% of the total mass of earth. Water pollution is a large set of adverse effects upon water bodies (lakes, rivers, oceans, groundwater) caused by human activities. Important Causes Of Water Pollution. CNG is a _____ (a) Polluted fuel (b) Harmful fuel (c) Clean fuel (d) None of these 3. Nutrients Pollution Some wastewater, fertilizers and sewage contain high levels of nutrients. For water to be useful for drinking and irrigation, it must not be polluted beyond certain thresholds. Each must be clean and available for humans and other living things to survive. Water pollution is the contamination of water bodies (e.g. According to the World Health Organization, in 2008 approximately 880 million people in the world (or 13% of world population) did not have access to safe drinking water. Name the substances that pollute water.