pyramids से जुडे रहस्यमय बाते

Pyramid of number is

Ecological pyramids are of I. three types (age pyramids, energy pyramids and biomass pyramids). II. four types (age pyramids, energy pyramids, number pyramids and biomass pyramids). III. five types ((age pyramids, energy pyramids, number pyramids, tropical pyramids and biomass pyramids). Select the statements with the correct option.

Which of the following ecological pyramids can be inverted? A. Pyramid of energy B. Pyramid of number C. Pyramid of biomass

A regular squred pyramid has side of its base 20cm and height 45cm is meited and recast into regular triangular pyramids of equailateral base of side 10cm and height 10 sqrt3 . What are the total numbers of regular triangular pyramid? एक सम वर्गाकार पिरमिड जिसके आधार की भुजा 20 से.मी. तथा ऊँचाई 45 से.मी. है, को पिघलाकर सम त्रिभुजाकार पिरामिड में ढाला जाता है जिसके समबाहु आधार की भुजा 10 से.मी. तथा ऊँचाई 10 sqrt3 से.मी. है। सम त्रिभुजाकार पिरमिडो की कुल संख्या क्या है?

(a) What is an ecological pyramid ? Compare the pyramids of energy , biomass and numbers. (b) Write any two limitations of ecological pyramids.

If the base of a pyramid is a square, it is called a square pyramid. state true or false

Pyramids of energy are-

Pyramid of numbers is

Pyramid: volume: SA