Q. 2 Which of the following can be the reasons for greater bio | UPSC PRO

Q. 2 Which of the following can be the reasons for greater biological productivity at the tropics as compared to
temperate region?
1. Less extreme seasonal variation at tropics as compared to the temperate region.
2. Higher solar energy is available at tropics.
3. Tropics have remained relatively undisturbed for longer durations than temperate region.