All the boats operating at night requires Navigation light.
Navigation light helps prevent collisions between boats and see if visibility is poor. The types of boat are : Rowboats, Tug boats, Vessels, Sailboat etc.
Various boats have different lightning color to show its use and side of the boat.
What the question for this assessment
I think it is c density and temperature
Answer:
elements in the same column have the same number of neutrons. elements with similar mass are placed in the same column.
Answer:
because switch moves after a waiter
Explanation:
