Which of the following algae is rich in protein?

Spirulina can be grown easily on....

Statement $A$: Protein-rich food produced by microorganisms is called Single Cell Protein $(SCP)$.
Reason $R$: The production of Single Cell Protein causes environmental pollution.
Which option is correct for Statement $A$ and Reason $R$?

Which of the following is true regarding Single Cell Protein $(SCP)$?

People recovering from a long illness are often advised to include the alga $Spirulina$ in their diet because it

Statement $P$: Heterotrophic mushrooms are cultivated globally.
Statement $Q$: $A$ cow weighing $250 \, kg$ produces $200 \, g$ of protein per day.