Which of the following best explains why humans need constant supplies of fresh water a Humans need a constant supply of water to provide them with?
Humans need a constant supply of water to provide them with essential vitamins. b. Humans need a constant supply of water to maintain proper hygiene. Constant supplies of freshwater are needed because body water is continually being lost.
Which if the following most significantly determines a community’s access to potable water?
Access to clean raw water sources most significantly determines a community’s access to potable water.
What is a function of water in the body quizlet?
What are the functions of water in the body? Solvent for many molecules so helps with metabolism and transport; protects, lubricates, and cleanses the internal and external body surfaces; water holds heat and changes temperature slowly therefore helps keep homeostasis.
Which of the following is a consequence of water polluted by human sewage?
Organic wastes such as sewage and farm waste impose high oxygen demands on the receiving water leading to oxygen depletion with potentially severe impacts on the whole eco-system. Industries discharge a variety of pollutants in their wastewater including heavy metals, organic toxins, oils, nutrients, and solids.
What is the introduction of pollution?
Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat, or light.
What are the different types of pollution and their causes?
Causes
- Air Pollution. There are two types of air pollutants, primary and secondary.
- Water Pollution. Nutrient pollution is caused by wastewater, sewage, and fertilizers.
- Land & Soil Pollution. Land pollution is the destruction of land as a result of human’s activities and the misuse of land resources.
- Noise & Light Pollution.
What is pollution and its effect?
Pollution effects are defined as “direct and/or indirect adverse impacts of contaminants on the marine environment, such as harm to living resources and marine ecosystems, including loss of biodiversity, hazards to human health, the hindering of marine activities, including fishing, tourism and recreation and other …
What are the causes and effect of water pollution?
Humans are the main cause of water pollution, which is triggered in many ways: by the dumping of industrial waste; due to temperature rise, that cause the alteration of water by reducing the oxygen in its composition; Or due to deforestation, which causes sediments and bacteria to appear under the soil and therefore …
What are main causes of water pollution?
Here are the few major causes of water pollution: Sewage And Waste Water: Sewage, garbage and liquid waste of households, agricultural lands and factories are discharged into lakes and rivers. These wastes contain harmful chemicals and toxins which make the water poisonous for aquatic animals and plants.
What role an individual can play in prevention of pollution?
It is better and more viable to prevent pollution by educating individuals than controlling pollution. Individuals should encourage to modify their lifestyle and living habits if that are not healthy for environment. Individuals should minimize wastage of resources such as electricity.