Are these sentences correct and have a good structure ?
“The graph gives information about the percentage of recycling trends of four different types of materials (paper and cardboard, glass containers, aluminum cans and plastics) over 28 years between 1982 and 2010.”
I am a little bit confused about the use of “trends”
- Should I use Plural or singular?
- About preposition: trends of or trend for ?
- Is trend a suitable word here?
- It seems that I repeated preposition “of” a lot. How I can change the sentense without repeated “of”?