You will need to cover what the Scientist say and write about it. Items to cover: coastal invasion by the oceans and also related erosion. You need to note that most of the world's major cities will be affected by this coastal invasion. With more energy available storms become more severe, we now have examples. Climate change: hotter summers, milder winters. Crop growing will need to change as the corn belt moves north. Prevention of climate change will involve major changes in living, working, energy consumption. You should note that the world's people are mostly resisting this or in denial. I feel change in what people do the prevent climate change will come too late.
Start out with, the ice was all melted, it's just happening again. Inc ancient Egypt and the lost city off the coast of Japan as reference. I think the temperature rising is not as great we are lead to believe infact most have no idea. They just agree with media etc. The increase since 1980 has been 0.7c. The global average is increasing and decreasing by 0.2c every year.. 2016 was the highest, then decrease in 17,18 and it went up again last year. These were built by man, the columns are 12ft tall.. They are currently 110ft below the surface..