The given line graph demonstrates the weight of various junky foods consumed in Britain throughout the period of 20 years, starting from 1970.
Overall, it is clearly seen that the amount of pizza eaten by the British experienced a noticeable fall in the given period, despite that it was the most popular in 1970. In contrast, that of hamburger and fish & chips rose considerably, despite that, they were the least popular type of fast food at the beginning of the given period.
When it comes to the amount of pizza consumed by the British, it decreased significantly from 1970 to 1980, falling from 300 to 210 grams. Then, it fell moderately from 1980 to 1990, delaying 200 grams. Thereby, pizza became the most low-consumed type of junky food.
Turning to the consumption of hamburgers, it increased at the same rate from 1970 to 1985, rising from 10 to 100 grams. Then, more noticeable rise considered in this trend from 1985 to 1990, increasing from 110 to 300 grams.
Likewise, there was a more significant increase in the weight of consumed fish & chips during the entire period, increasing from 90 to 500 grams. Consequently, it became the most favored fast food at the end of the given period.