Nowadays every one has started to show interest towards minimizing the pollution being caused by them and also make others to work towards it. Now for my part let me educate at least some people in this world about the adverse effects that is being caused by these kinds of environmental hazards. Now lets see whatz ACID RAIN is about...............
The above two pictures shows the manner in which acid rain is being caused by industries around the world and by the automobiles.
WHAT IS ACID RAIN ??
Acid rain is nothing but the normal rain containing acid higher in content than it it should be of. So as we know a normal acid itself will be having high toxic and corroding substances in it. So if it mixes with the atmospheric water molecules the resultant will be "ACID RAIN". It has harmful effects on plants, aquatic animals, and infrastructure. Acid rain is mostly caused by human emissions of SULFUR and NITROGEN compounds which react in the atmosphere to produce acids. In recent years, many governments have introduced laws to reduce these emissions.
WHAT IS GREEN HOUSE EFFECT ??
The greenhouse effect is the heating of the surface of a planet or moon due to the presence of an atmosphere containing gases that absorb and emit infrared radiation, which include water vapor, carbon dioxide and methane, are almost transparent to solar radiation but strongly absorb and emit infrared radiation.The Earth receives energy from the Sun mostly in the form of visible light. The atmosphere is almost transparent to visible light, so that about 50% of the sun's energy reaches the Earth and is absorbed by the surface. Like all bodies with a temperature above absolute zero the Earth's surface radiates energy in the infrared range. Greenhouse gases are not transparent to infrared radiation so they absorb it. Infrared radiation is absorbed from all directions and is passed as heat to all gases in the atmosphere. The atmosphere also radiates in the infrared range (because of its temperature, in the same way the Earth's surface does) and does so in all directions. The surface and lower atmosphere are warmed because of the greenhouse gases, making our life on earth possible.
FROM WHAT DOES ACID RAIN FORMS ??
(a) Wet deposition
This picture shows you how the acid has been deposited over the rocks around the world due to acid rain. This picture also indicates a form of wet deposit of acid rain.Wet deposition of acids occurs when any form of precipitation (rain, snow, etc.) removes acids from the atmosphere and delivers it to the Earth's surface. This can result from the deposition of acids produced in the raindrops (see aqueous phase chemistry above) or by the precipitation removing the acids either in clouds or below clouds. Wet removal of both gases and aerosols are both of importance for wet deposition.
As you see these pictures you can understand the way in which the today automobiles are combining its hands with industries causing pollution and acting as a huge source of dry acid deposition.
Dry deposition occurs in the absence of precipitation. This can be responsible for as much as 20 to 60% of total acid deposition.
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