MCQ
The pyramid that cannot be inverted in a stable ecosystem, is pyramid of
- ANumber
- ✓Energy
- CBiomass
- DAll the above
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Reason : In the primitive atmosphere, oxygen was involved in forming ozone
$II.$ The cell is treated with specific concentration of a divalent cation such as $... B...$ to increase pore size in cell wall
$III. $In $...C...$ method recombinant $DNA$ is directly injected into the nucleus of an animal cell
The most appropriate option regarding $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ is