Why is the climate changing every year?

The current warming trend is of particular significance because most of it is extremely likely (greater than 95% probability) to be the result of human activity since the mid-20th century and proceeding at a rate that is unprecedented over decades to millennia.

so basically it's saying due to human activity climate change has gotten worse   since to mid-20th century

i believe he was the 5th king of uruk. so c

if i am correct the answer is going to be a) the federal program of reconstruction ended.