7 A bug walks exactly halfway around the edge of a circular cupcake with a diameter of 5 cm.
distance =
displacement -
8.
A swimmer swims a half lap, moving from the left end to the right end of a pool that is 50 meters long
distance =
displacement
9.
A swimmer swims an entire lap, moving from the left end to the right end and back again to the left end in a pool
that is 50 meters long
distance =
displacement =

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint