What are age pyramids, Biology

Assignment Help:

What are age pyramids?

Age pyramids are graphical representations in form of superposed rectangles every representing the number of individuals contained in age ranges into which a population is divided. Normally the lower age ranges are shown more to the bottom of the pyramid, always below higher ranges, and the variable dimension that shows the number of individuals is the width (there are age pyramids though in which the variable dimension is the height).

 


Related Discussions:- What are age pyramids

Posterior leaflet-technique of operation, Posterior Leaflet: In the poste...

Posterior Leaflet: In the posterior leaflet a quadrangular excision of the sector involved in the prolapse is done. This may be up to 15-20 per cent of the leaflet. The remaining

What is the root cap, What is the root cap? The root cap is a protectiv...

What is the root cap? The root cap is a protective structure located in the tip of the growing root. It protects the meristematic tissue of the root forming a cap that surround

What is the energy efficiency of photosynthesis, What is the energy efficie...

What is the energy efficiency of photosynthesis? a) What area is occupied by each molecule? b) Calculate the molecular absorption cross section in units of A 2   A cr

Explain submarginal curved - limited mucoperiosteal flaps, Explain Submargi...

Explain Submarginal Curved - Limited Mucoperiosteal Flaps - Also called: semilunar flap, - Curved incision in the alveolar mucosa and the attached gingival. - NO advantag

What is the virus that causes flu, Q. What is the virus that causes flu? Wh...

Q. What is the virus that causes flu? Why doesn't the body produce permanent immunity against that virus? How does the vaccine against flu work? Flu is a disease caused through

Animal and plant cells, Animal and Plant Cells The internal structural ...

Animal and Plant Cells The internal structural organisation and information related with hereditary characters and metabolic pathways are similar in all eucaryotic cells whethe

Biochemical and metabolic problems and their management, Define Biochemical...

Define Biochemical and Metabolic Problems and their Management? Hypokalaemia (low concentration of potassium ion in the blood), we learnt earlier, is a problem caused due to se

Growth-form and structure, Growth-form and Structure In a community the...

Growth-form and Structure In a community the number of species and size of their populations vary greatly. A community may have one or several species. The environmental factor

Explain phylum arthropoda, Phylum Arthropoda : (8,00,000 to 10,00,000 spec...

Phylum Arthropoda : (8,00,000 to 10,00,000 species) They are known as 'jointed footed' animals. The appendages are paired, and jointed with chitinous exoskeleton, varied and wi

Explain the menopausal symptoms, Explain the Menopausal symptoms Menopa...

Explain the Menopausal symptoms Menopausal symptoms include: (i) hormone-related gynaecological problems that occur around the menopause, and (ii) post-menopausal uterine

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