Hypothetical age pyramids, Biology

Assignment Help:

Hypothetical Age Pyramids

The three types of hypothetical age pyramids which are as follows:

1) A pyramid with a broad base, indicating a high percentage of young individuals in a population. This shows that population is expanding exponentially.

2) A triangular or bell shaped pyramid indicating moderate proportion of young to old individuals. This is the characteristic of a stable population where natality equals mortality.

3) An urn shaped figure indicating a low number of young individuals. This pyramid is the characteristic of aging or declining population.

404_Hypothetical Age Pyramids.png

Figure: Three types of age pyramid showing large (1) moderate (2) and small (3) number of young individuals in a population. Vole population under laboratory conditions is shown expanding (a), and stable (b) age pyramids.


Related Discussions:- Hypothetical age pyramids

Define uses of microbes in industry, Normal 0 false false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Why does not gene therapy cure cystic fibrosis, Why doesn't gene therapy cu...

Why doesn't gene therapy cure cystic fibrosis? Although a normal gene is introduced into a patient's surface cells in the lung, these cells are not the ones that require produc

Explain broad spectrum antibiotics?, Board spectrum antibiotics are effecti...

Board spectrum antibiotics are effective against several diff. types of harmful bacteria ex: tetracycline

Zoonoses disease-brucellosis, Brucellosis Brucellosis is a global probl...

Brucellosis Brucellosis is a global problem because of its public health and economic implications. It is one of the serious diseases affecting livestock all over the worlds th

Explain the sarcomere, For a sarcomere of a skeletal muscle, define the fol...

For a sarcomere of a skeletal muscle, define the following terms: A is the length of the A Band; H is the length of the H Zone; I is the total length of the I Bands in the sarcomer

What is difference between analogous and homologous organs, What is the dif...

What is the difference between analogous and homologous organs? The Characteristics of different species are said to be analogous when having the same biological function, for

Optical rotation in organice compounds, how the optical rotaion occurs in g...

how the optical rotaion occurs in glucose and ribose?

Elaborate extracorporial in detail, Elaborate Extracorporial in detail. ...

Elaborate Extracorporial in detail. Outside of the body. An example is extracorporial digestion found in some animals where digestive enzymes are regurgitated into food. Once i

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