[经济金融] How to talk to sons

Hi I'm Gina. - P3 n* N# _0 W! s' ?2 A: {5 i
I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. : Z, Y( `% s$ _. g
I have a question, maybe some of you can help me?
- T1 T5 Z; D+ n+ ~4 E) |: Qcsuchen.deAt what age should a parent teach their son about ‘sex’ if there is no father around or would it be better for the kid to have a male family member to do this?
3 O- [" [2 r, n. U8 HIt really bothers me because i've found adult magazine in their room today. 8 |; z6 n( _6 \$ S( l  ]; n
Should I talk to them by miself or ask my brother to do it?
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. K1 i- o+ w+ o) HHope someone had the same problem and can advise me anything. 7 i( {3 X3 ~. d! [- q! R
By the way, here is the photo of my sons:
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Happy mother of two great sons...