Hello everyone,
I wonder if I’m allowed to use many ad units in the same activity like one or more banner ad units, one or more native ads units or combine them together banners with native ads.
Is this possible or it’s against terms of AdMob and other networks?
Thanks in advance.
Best regards to all 
AFAIK you can you use only one banner in single activity from admob…I have no idea about native ads …
Thank you very much. 
It is against admob policy, but you may combine banner and interstitial.