MCQ
$...A...$ is required for higher primary productivity. $...B...$ have the lowest primary productivity as the soil is deficient in moisture.
Choose the correct option for $\mathrm{A}$ and $\mathrm{B}$
- ✓$A-$Rain; $B-$desert
- B$A-$Heat; $B-$forest
- C$A-$Rain; $B-$forest
- D$A-$Forest; $B-$desert