MCQ
Two main structural features of an ecosystem are.
- ASpecies composition and stratification.
- BSpecies composition and productivity.
- CProductivity and energy flow.
- DNutrient cycling and stratification.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$I$. Rosie is a first transgenic cow
$II$. Rosie produced human protein enriched milk
$III$. The milk contained the human $\alpha$-lactalbumin and scientist behind the research believes that the milk from the cow could provide an alternative to human breast milk
Which of the statements given above are correct?
Here $A$ and $B$ refers to