Hypothetical age pyramids, Biology

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.

Posted Date: 1/21/2013 1:12:39 AM | Location : United States







Related Discussions:- Hypothetical age pyramids, Assignment Help, Ask Question on Hypothetical age pyramids, Get Answer, Expert's Help, Hypothetical age pyramids Discussions

Write discussion on Hypothetical age pyramids
Your posts are moderated
Related Questions
Protein denaturizing can be source by temperature variation, pH change, and changes in the concentration of surrounding solutes and by other processes. Most proteins are denatured

Visual Field Examination Russel et. al include a formal visual field examination using a parameter as part of their assessment procedure. Tests in the expanded version include


What is atom? Atoms are the smallest component of matter that determine its unique chemical and physical properties. They are composed of negatively charged electrons, positive

Explain about Listeria monocytogenes infection Listeria monocytogenes is a gram-positive, motile, non-spore forming rod. It is widely distributed in nature and can be found on

a) Explain what is meant by ovulation. b)  How often does it happen in humans?   (a) Ovulation is the release of an ovum from a mature follicle in the ovary.

I need help with my biology virtual lab. Its due tomorrow

Explain therapeutic diet planning All detailed dietary modifications  should be presented with choices,  clear guidelines, menu guidance and supporting  information  as  to  al


what is the excretory organ of agama lizard