1)How global temperature increas?
2)How much food need polar bears to survive?
3)Why summer became faster?
4)Why many dens collapse at the spring?
5)What will happened if we will ignore cataclysm effect?
6)What result of global warming for animals?
7)Why the Earth`s climat is changing?
8)What students think about polar bear population?
9)Why polar bears have reduced hunting period?
10)Who can help to save our planet?