Extinction, Biology

Assignment Help:

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.


Related Discussions:- Extinction

Indication in circulatory assist devices, Indication :  IABP is commonly u...

Indication :  IABP is commonly used to supporting failing left ventricle after open-I1ca1-t surgery or in cardiogenic shock after myocardial infarction. It is at times used in uns

Trichomonas vaginalis - protozoan, Trichomonas vaginalis - Protozoan T...

Trichomonas vaginalis - Protozoan This cosmopolitan protozoan lives exclusively in the female vagina and male urethra or prostate. It causes a mild disease called trichomonas

Structure of chromosome, STRUCTURE Each chromosome composed of two i...

STRUCTURE Each chromosome composed of two interwoven (coiled) threads called Chromonema (Chromonemata) embeded in a matrix of semisolid protein. Surface of matrix is in

Define advantages of using the plate counts method, Define Advantages of Us...

Define Advantages of Using the Plate Counts Method? 1. It is simple and sensitive method. 2. It provides viable count as only live cells will grow and produce the colony.

Insects - hormones in growth and reproduction, Insects - Hormones in Growth...

Insects - Hormones in Growth and Reproduction In insects hormones regulate moulting and metamorphosis. The larvae or nymphs which hatch out of the eggs undergo regular moultin

What are the main sources of mercury pollution, Q. What are the environment...

Q. What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution? The Mercury is a metal that when present in the water of rivers

How membrane voltage increases, Consider an axon of a neuron. At time=t1, i...

Consider an axon of a neuron. At time=t1, its voltage is at threshold for an action potential; at time=t2, its voltage is at 0 millivolts prior to the peak of that action potential

Patient with diabetes mellitus, Educating a patient with diabetes mellitus....

Educating a patient with diabetes mellitus. At this point you have understood in detail about diabetes mellitus, its management and complications. You can appreciate now why it is

Drug injection and hepatitis , Task: Write a maximum of five (5) pages of y...

Task: Write a maximum of five (5) pages of your research plan which should include details on the following topics as appropriate to your chosen study design: I. Background info

Differentiate individual atoms true or false, What is the first step normal...

What is the first step normally taken when you look through the oculars? The nuclei of the cheek cells have been stained using a special dye so that they appear purple. What is the

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd