Which pyramid is always upright?

Which of the ecological pyramids is always upright?

Which of the following pyramids is always upright and can never be inverted?

Which ecological pyramid is always straight?

Name the type of pyramid that is always upright. Give reasons.

Fill ups The pyramd of……………is always upright.

Why the pyramid of energy is always upright? Explain.

Ecological pyramids are usually upright. Meanwhile some pyramid of biomass is inverted. Explain the reason.

Explain giving reasons that pyramid of energy is always upright.

It is often said that the pyramid of energy is always upright. On the other hand, the pyramid of biomass can be both upright and inverted. Explain with the help of examples and sketches.