How has the suburban environment changed shopping?

I would say that in North America or at least Canada and the US suburban areas mainly have big box stores like COSTCO, WALMART etc and the small personalized shops are more common in the city core and people's orders are liable to be bigger in the suburban areas as travel distances to shops can be greater.

The process by weathered rock and mineral particles are removed from one area and transported elsewhere

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.