Extinction, Biology

EXTINCTION -

It refers to disappearance of a species from earth when its last surviving member dies.

Organic evolution not only creats new sps. but also eliminates some old ones.

Many sps. become extinct before man appeared as ostracodermi & dinosaurs.

Posted Date: 10/4/2012 6:08:37 AM | Location : United States







Related Discussions:- Extinction, Assignment Help, Ask Question on Extinction, Get Answer, Expert's Help, Extinction Discussions

Write discussion on Extinction
Your posts are moderated
Related Questions
Q. What are the functional differences between neurons and glial cells? Neurons and Glial cells are the cells that form the nervous system. Neurons are cells that have the func

Reparative Regeneration This type of regeneration, as the name suggests, involves repair of a wound or replacement of a body part removed intentionally or because of injury.

Explain Flucytosine Flucytosine (Ancobon) - Potentially lethal, dose-related bone mar- row toxicity, colitis and rapid development of resistance when used alone limit the use o

Contractile vacuole - Protozoans The contractile vacuoles may differ in complexity in various groups of protozoans. In amoebae the vacuoles are carried around in the cytoplasm

Q. Illustrate Mitral Stenosis and Pregnancy ? Since mitral stenosis is often seen in young women, it is not uncommon to see young women with pregnancy complicated by mitral ste

As bone looses width, height, volume, the attached gingiva gradually decreases and is prone to abrasions caused by the overlying prosthesis. In addition high muscle attachments and

Q. What is Cholesterol? In its free, unesterified form cholesterol is a major component (together with phospolipid) of cell membranes. Its presence helps to stabilize membrane

#Is GMO food good as the prospective of the ethic values of the society?..

What is Physiologically corrected transposition of arteries? Physiologically corrected Transposition of the great arteries (ZTGA): Atrio- ventricular connections are also inapp

Classic Repair (Linear repair) :  The operation is done under cardio pulmonary bypass, through median sternotomy. If additional CABG is required, conduit harvesting is done.