Answer:
Cumulonimbus clouds, also known as thunderheads, release hail and rain in conjunction with updrafts. Ice crystals ride such updrafts into the air and then fall through the clouds, collecting water droplets as they drop. Once water droplets freeze onto ice crystals, hailstones are created
The first zoo in the United States opened in Philadelphia, Pennsylvania, in 1874
At this point, i think you can allow the line to miss a plot a little bit when passes between circles
pretty much it would look like this ,
just crosscheck it with the data if you're not sure
Hope this helps