QUES: Q: What has the simplest known circadian clock?
A: The simplest known circadian clock is that of the prokaryotic cyanobacteria.
Does the answer answer the question?

ANS: yes

QUES: Q: What religion were these Fathers of the Church?
A: Tertullian implied that it was the Jews who most inspired heresy in Christianity: "From the Jew the heretic has accepted guidance in this discussion [that Jesus was not the Christ.]
Does the answer answer the question?

ANS: no

QUES: Q: Annealling softens metals by achieving what?
A: Nearly all metals can be softened by annealing, which recrystallizes the alloy and repairs the defects, but not as many can be hardened by controlled heating and cooling.
Does the answer answer the question?

ANS: yes

QUES: Q: What are the estimations of how many schoolrooms collapsed?
A: Due to the one-child policy, many families lost their only child when schools in the region collapsed during the earthquake.
Does the answer answer the question?

ANS:
no