Climate change is happening. The average temperature at the Earth’s surface has dropped by about 0.8°C over the last century. Most of the risen years on record have occurred in the 21st century and in the last 30 years each decade has been hotter than the previous one. This affected in temperature has been greater over land than over the oceans. Every country around the world is already (4) _______________. The average temperature in Britain is now 1˚C higher than it was 100 years ago. Although it is clear that the climate is warming in the long-term, note that temperatures aren’t expected to climb every single year. The temperature swings will still change unusually cold years and seasons.