question:
Plant circadian rhythms tell the plant what season it is and when to flower for the best chance of attracting pollinators.
What do plants need to attract to their flowering?

answer: yes

question:
According to geologist Stefan Schmid, because the Western Alps underwent a metamorphic event in the Cenozoic Era while the Austroalpine peaks underwent an event in the Cretaceous Period, the two areas show distinct differences in nappe formations.
When did the Austroalpine peaks undergo their event?

answer: yes

question:
Since most common power sources (batteries, mains) are constant-voltage sources, most LED fixtures must include a power converter, at least a current-limiting resistor.
What feature do most LED fixtures need to have?

answer: yes

question:
Private satellite channels started in July 1992 with the launch of Star TV.
When did Doordarshan begin broadcasting in Hyderabad?

answer:
no