I believe that both are complete sentences.
Had given is the verb phrase
Chronology is the science of arranging events in their order of occurrence in time. Consider, for example, the use of a timeline or sequence of events. It is also "the determination of the actual temporal sequence of past events". Chronology is part of periodization.
I am not sure about the first question, I cannot help you with that one, sorry. :/
However, the second question I know. Ragnarok is A), an apocalyptic prophecy, a Norse prophecy stating when the end of the world will come.
Answer:
O A Katie has respect for nature which is why she has researched more about it.
Explanation:
You you can see in the context that she has a lot of information about the 'Ibis which is known as a spoonbill.
