Yes, absolutely.
Put your adsence script code by going here
admin panel>plugins>advertisement>settings

But there is no Plugin like you mentioned named "Advertisement" available. Do I have to download the plugin and install or any other procedure is there to get the plugin in to the Admin panel?

Yes, check the Oxwall Store on this site and there should be an Advertising plugin.  Once there, insert the adsense code into an advertisement and configure the plugin.

Here it is http://www.oxwall.org/store/item/37 ;

Why isn't Google Adsense working in the HTML blocks? The Advertisement plugin is too difficult to work with and you can only put the Advertisement block on the Main page.

Hello,

Please I need help.
How can i create HTML block on  other pages on my oxwall site. I have "Customize this Page" only on main and forum pages. I want to add adverts on other pages. Would be glad for your assistance. Thanks

Vicki this is untrue the advertisement plugin works with 3 ad blocks there is a top and bottom ad and if you have a sidebar theme you can use it in the sidebar as well I suggest using these and adding it in the backend 

Quote from Den Here it is http://www.oxwall.org/store/item/37 This plugin is absolutely FREE of charge :)

Hello Den,

I tried two times yesterday and again today to install the advertisement plugin to my site. My site went off on both occasions. Is there anything  i am doing wrongly. I need help.

Obiri, what is your version of Oxwall?

Hello Aliia, the version is 1.4.1

Thanks

Obiri, and you are trying to install the Advertisement plugin downloaded from the Store?

Issue is that Advertisement plugin that is available for download in the Store now is compatible to work with 1.5.X version of Oxwall only.

In your case  I suggest installing Advertisement plugin for 1.4.1 version of Oxwall.

try this one.

Thank you very much, i will try it now.