<span>Ocean currents have a effect on precipitation and climate. The ocean currents bring warm water to cold places and vice versa. Without the ocean currents being the way they are, we would have the climate we have today. The precipitation part of my answer is pretty obvious. The ocean is water and water evaporates and makes clouds and then the clouds rain.</span>
Answer: 
Explanation:
We are asked to multiply 1 nano sec with 1 km/sec.
The conversion used from nano second to second
1 nsec = 
The conversion used from km to meters:
1 km = 1000 m

Putting the values we get:

Therefore, the given conversion is 