Question

.which is straight pyramid?​

Answer 1

Explanation:

An energy pyramid is always upright because there is a gradual decrease in energy at successive trophic levels. This happens according to the 10% law of energy transfer, where only 10% of the total energy is transferred from one trophic level to another.

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Answer 2

Answer:

Straight pyramid: all its side faces are isosceles triangles and the height falls down to the average point of the base.

• Pyramid of energy, showing the rate of energy flow and/or productivity at successive trophic levels. The pyramids of numbers and biomass may be upright or inverted depending upon the nature of the food chain in the particular ecosystem, whereas pyramids of energy are always upright