Suitable conditions for the formation of fossils The organism’s body must be buried immediately after death in a medium that preserves it from decomposition, The organism must have a hard skeleton, A suitable medium...
Fossils Fossils are the traces and the remains of the living organisms which are preserved in the sedimentary rocks, The traces of once old living organisms indicate their activity during their life and the...
The water pollution Water pollution is the addition of any substance to the water which causes a continuous gradual change in the water properties and affects the health and the life of the living...
Physical properties of the water The water has a higher melting point, boiling point, and heat of vaporization than most common liquid. This fact indicates that there are strong forces of attraction between the...
