Which of the following statements is not correct? (2021) (a) Pyrami...

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Which of the following statements is not correct? (2021)
(a) Pyramid of biomass in sea is generally upright.
P
(b) Pyramid of energy is always upright.
W.
(c) Pyramid of numbers in a grassland ecosystem is upright.
(d) Pyramid of biomass in sea is generally inverted.
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