Ozone layer and hole

"Ozone layer's hole growing bigger every year", the headline of a news item screams out of 'The Hindu'. Sumit, my roomi reads it out aloud. "Yaar, what's this yaar, do you think it is because of pollution?". "Kahan hai bey, dikha to (Show me, where is it)...." Neeraj, the other roomi drops in. "haan hoga (maybe), green house emissions, co2 control, kyoto protocol....sabka koi fayda nahi (no benefit of all this)". Sumit speculates aloud "Yaar this is an important question and might be asked in the exam, ...note it down...and yes, check out the reasons too, what it means to say that ozone layer's hole is growing bigger every year....UV rays, cancer....baldness....and what else....?"All the time, my head is bent on applied mechanics trying to figure out the natural frequency of an obscure linkage arrangment. Neeraj turns his attention towards me now, "Abbe tiru, what does it mean to you when it says that Ozone layer's hole is growing bigger every year, tell me man...."
I reply: "It means, Ozone layer is female"
Wonder how to solve multiple degree linkage frequency problems when i am getting stuck in one degree of freedom.

Tiru