Global warming

Global warming is defined as the increase of average temperature near or on the surface of the earth, as a result of what is known as t... Read more »

Causes of Global warming.

Global warming is mainly caused by greenhouse gases. The main gases are carbon dioxide (CO2), methane (CH4), Chlorofluorocarbons (CFCs) ... Read more »

Effects of Global warming

1. Increase temperature of the oceans : This causes the bleaching of corals. Bleaching of coral reefs is the loss of pigments and micro... Read more »

Solutions to Global Warming

There is no single solution to global warming, which is primarily a problem of too much heat-trapping carbon dioxide (CO 2 ), methane a... Read more »

Ozone layer depletion

Ozone depletion is the process where ozone holes are created in the ozone layer. The main reason for ozone depletion are the chlorofluo... Read more »

Possible Effects of Ozone Depletion

As ozone depletes in the stratosphere, it forms a 'hole' in the layer. This hole enables harmful ultraviolet rays to enter the ... Read more »

Ways of controlling ozone layer depletion

1. Limit private vehicle driving A very easy way to control ozone depletion would be to limit or reduce the amount of driving as vehi... Read more »

Environment conservation

Environment conservation is the protection and preservation of natural resources from destruction, wastage or loss. Natural resources i... Read more »

Environmental conservation measures

1. Setting up organization and institutions. Many organizations have been set up for the purpose of environment conservation. These o... Read more »

Factors affecting the rate of Gaseous exchange

1. Carbondioxide concentration The high concentration of carbon dioxide in the lood also the rate of gaseous exchange increase this ... Read more »

Causes of Seed dormancy

1. Impermeability of seed coat to water : due to seed coat structure, which is hard enough to restrict the entry of moisture into the ... Read more »

Methods of breaking dormancy

In nature dormancy terminates when embryo gets suitable environment such as adequate moisture, aeration and temperature. The impermeab... Read more »

Seed Germination

Definition: Seed germination is the resumption of active growth of the embryo that results in the rupture of the seed coat and the eme... Read more »

Factors affecting seed germination

a. Water: Water is a basic requirement for germination. It is essential for enzyme activation, breakdown, translocation and use ... Read more »

Gaseous Exchange in Plants

In lower plants (and also protozoans) exchange of gases takes place through the general body surface as they are not highly modifie... Read more »