The Robinson projection map is considered very useful because . features near edges are most accurate
most distances, sizes, and shapes are accurate
all of the continents are the same size
it shows land masses in three dimensions

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.