Scientists look at patterns or trends in data. some have done this to estimate the amount of plastic that will be in the world in future years. The amount of plastic produced per year is as follows;

Year 1980(million tonnes) -63

Year 2010 -270

Year 2020- 540

Year 2050-

There is no estimate for 2050

1. write your own estimate for 2050

2. explain why you calculated this value

3. draw a chart to display the results