Environment protection

Civilization has brought people many advantages but its products also pollute and damage the environment in which we live.

I think that the main ecological problems are pollution, greenhouse effect and deforestation. Air pollution is the biggest problem in large cities and in areas with concentrated industrial production. Emissions range from smoke, dust and smells to car and lorry exhausts. Smoke contains sulphur dioxide(SO₂), nitrogen oxide(NO) and carbon dioxide(CO₂) which are produced by burning fossil fuels. Substance such as SO₂ and NO can cause major changes in the environment which can lead to climate changes. These substances mix with water vapour in the atmosphere and form sulphuric and nitric acids. Sunlight turns these acids into poisonous oxidants which fall in the form of rain. It is called acid rain.

Trees are very important for our life because they are the lungs of our planet. They absorb carbon dioxide from the air and give out oxygen in return. In some parts of the world trees aren’t threatened by pollution but by people. The great rain forest are being destroyed for firewood and building materials. If we lose tropical rain forests the temperature will rise. The sea levels will rise which will results in the flooding of many coastal cities.

Without greenhouse effect there could be no life on our planet because the Earth is warmed up naturally by the atmosphere which traps solar radiation. But manmade  atmospheric emissions, such as CO₂, NO, chlorofluorocarbons, methane and water vapour prevent the heat from excaping. The result is a rise earth’s temperature, the melting of arctic ice and the flooding of areas situated near sea level.

Ozone is another air pollutant. It is produced by the reaction of sunlight on car exhaust fames and is a major air pollutant in hot summer. On the ground level ozone can cause asthma attacks. On the other hand, ozone forms a layer in the upper atmosphere which protects life on the Earth from ultraviolet rays, which is a cause of skin cancer.

We can re-use and recycle the waste materials. In the streets are installed containers for sort trash. Trash is sorted to three groups. Paper, glasses and plastic. Domestic rubbish  should be sorted out too. Kitchen garbage and garden waste of organic origin can be composed and turned into fertilizers.

For protect our environment we should recycle paper, don’t use plastic bags but use biodegradable plastic bags, biodegradable soaps and detergents, avoid buying aerosol products and products from certain companies, buy products in package which can be refilled and re-used, sort trash, return bottles, reduce car use, protect endangered species, crate more trees and save rainforests.

range – nalézat se

cause – příčina, způsobit, důvod

lead – vedení, vést

manmade – s lidskou posádkou