*Twenty questions atheists struggle to answer

For my answers to the questions below see the following links:
Questions 1-6
Questions 7-11


For others' answers see here

Here is a list of twenty questions that, in my experience, atheists either won’t or can’t answer.
I am not, in posting these, saying that atheists have no answers to them, only that as yet in over forty years of discussion with them I am yet to hear any good ones.

Coherent responses are welcome in the comments column below (See my own responses to questions 1 to 6 and 7 to 11).

Twenty questions atheists struggle to answer

1.What caused the universe to exist?

2.What explains the fine tuning of the universe?

3.Why is the universe rational?

4.How did DNA and amino acids arise?

5.Where did the genetic code come from?

6.How do irreducibly complex enzyme chains evolve?

7.How do we account for the origin of 116 distinct language families?

8.Why did cities suddenly appear all over the world between 3,000 and 1,000BC?

9.How is independent thought possible in a world ruled by chance and necessity?

10.How do we account for self-awareness?

11.How is free will possible in a material universe?

12.How do we account for conscience?

13.On what basis can we make moral judgements?

14.Why does suffering matter?

15.Why do human beings matter?

16.Why care about justice?

17.How do we account for the almost universal belief in the supernatural?

18.How do we know the supernatural does not exist?

19.How can we know if there is conscious existence after death?

20.What accounts for the empty tomb, resurrection appearances and growth of the church?