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Environmental Pollution

Biology

ENVIRONMENTAL POLLUTION

POLLUTION  Definition: Pollution is defined as the release of toxic or harmful substances into the environment by their natural forces or man and other animals to an extent that causes biological damage to man and his resources. In other words, pollution is the release of harmful substances into the environment, i.e., water, air and land in quantities or to the level that are harmful to man, animals and plants. The harmful substances that cause pollution in the environment are called pollutants. There are four main types of pollution. These are (a)Air pollution  (b)Noise pollution  (c) Land pollution  (d) Water pollution   The major air pollutants, their sources, harmful effects and their control   Air Pollutants Sources Effects Carbon monoxide   Burning of fuel in cars other combustion engines and some industrial processes It causes suffocation because it combine with haemoglobin and reduces its ability to carry oxygen which results in… Read More »ENVIRONMENTAL POLLUTION

Basic Science

ENVIRONMENTAL POLLUTION

EFFECTS OF POLLUTION Environment Degradation Environment is the first casualty for increase in pollution weather in air or water. The increase in the amount of CO2 in the atmosphere leads to smog which can restrict sunlight from reaching the earth. Thus, preventing plants in the process of photosynthesis. Gases like Sulfur dioxide and nitrogen oxide can cause acid rain. Water pollution in terms of Oil spill may lead to death of several wildlife species.   Human Health The decrease in quality of air leads to several respiratory problems including asthma or lung cancer. Chest pain, congestion, throat inflammation, cardiovascular disease, respiratory disease are some of diseases  that can be causes by air pollution. Water pollution occurs due to contamination of water and may pose skin related problems including skin irritations and rashes. Similarly, Noise pollution leads to hearing loss, stress and sleep disturbance.   Global Warming The emission of greenhouse… Read More »ENVIRONMENTAL POLLUTION

Basic Science

ENVIRONMENTAL POLLUTION

Pollution occurs when pollutants contaminate the natural surroundings; which brings about changes that affect our normal lifestyles adversely. Pollution is the introduction of contaminants into the environment that cause harm or discomfort to humans or other living organisms, or that damage the environment which can come in the form of chemical substances, or energy such as noise, heat or light.   Types of pollution Water Pollution Air Pollution Soil Pollution   WATER POLLUTION Water Pollution is the type of pollution that involves the contamination of various water bodies. Various aquatic creatures depend on these water bodies and its natural nutritious features to support its life. Water pollutants include insecticides and herbicides, food processing waste, pollutants from livestock operations, volatile organic compounds (VOCs), heavy metals, chemical waste and others.   EVALUATION What is pollution? Mention three types of pollution.   CAUSES OF WATER POLLUTION Industrial waste gets dumped into these water… Read More »ENVIRONMENTAL POLLUTION

PHE

EFFECTS OF ENVIRONMENTAL POLLUTION

The effects of environmental pollution can be dangerous to life and properties. The following are the effects of pollution: Effects of Air Pollution Air pollution causes irritation in the throat, nose, lungs and eyes. It brings about global warming (greenhouse effect). It causes breathing problems. It aggravates existing health conditions such as asthma. Increases the risk of cardiovascular disease. It produces acid rain. Air pollution results in the depletion of ozone layer.   Effects of Land Pollution Dump sites produce bad smell and odour the environment. Land pollutants like broken bottles can cause injuries in human. Landfills breed rodents like rats, mice and insects, that in turn transmit diseases. Many landfills are usually burnt and they cause further air pollution. Land pollution causes problems in the human respiratory system. Land pollution results in land wastage. It makes the surrounding look unattractive and discourage visitors.   Effects of Water Pollution It… Read More »EFFECTS OF ENVIRONMENTAL POLLUTION

PHE

ENVIRONMENTAL POLLUTION

Environmental Pollution is the release of contaminated and harmful substances and materials into the surroundings which affect living things negatively. Pollution occurs to air, water and land. Pollution is the contamination of fresh and pure air, land and water with impurities. It is the release of unwanted substances into the surrounding.   Pollution is undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities. This is also the addition of substances or forms of energy to the environment at a rate faster than the environment can accomodate.   Types of Pollution Air pollution Water pollution Land pollution Noise pollution   Others include Visual pollution Thermal pollution Radioactive pollution   Air Pollution – This is the release of harmful and unwanted substance into the air. It is the addition of pollutants into the atmosphere. Water Pollution – This is the contamination of  water bodies… Read More »ENVIRONMENTAL POLLUTION

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