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
What is circulation? Circulation is the movement of substances as nutrients and gases within blood vessels and cavities all by the organism.

The halstead-reitan neuropsychological battery The beginnings of the battery can be traced to the special laboratory established by Halstead in 1935 for the study of neurosurgi

Using an average wavelength of 450 nm (0.45 um) can you resolve two objects that sit greater than 200nm apart from one another? Use mathematical calculations to justify your answer

Define Key Concepts and Facts about Disaccharides? 1. All disaccharides contain 2 monosaccharides. 2. Disaccharides are linked by glycosidic linkage. 3. If both the functional

Explain Malnutrition Malnutrition, impaired immunity and infection can form a triad or vicious cycle, as illustrated in Figure, which works synergistically and thus worsens the

Q. Show Symptoms of Dyspepsia? The symptoms are heartburn, upper abdominal discomfort (often food-related) indigestion, bloating, fullness, nausea and anorexia. Such symptoms c

whats ur clear definition of virus

What action is EPA taking on plant-incorporated protectants? EPA has issued three final rules clarifying and formalizing EPA's framework for federal oversight of plant-incorpor

Associated nerves and vessels The Anterior superior alveolar, Infraorbital, and Posterior superior alveolar nerves and arteries provide both the innervation and blood supply to

IODINE The element is available is drinking water, vegetables and fish. Table salts are also compulsorily iodized to provide iodine in the diet. All sea foods are rich in