4. Draw a line scale to show 1 cm represents 100 m.
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Answer is in the photo. I can only upload it to a file hosting service. link below!

https://cutt.ly/wzdvC7R

places of higher salinity. there are parts of the ocean where hardly any rain falls but warm dry winds cause lots of evaporation. this evaporation removes water – when water vapour rises into the atmosphere, it leaves the salt behind, so the salinity of the seawater increases. this causes the seawater to become denser.

answer; i believe the correct answer is (fluctuated);