Answer:The angular seperation is 
Explanation:
For two objects separated by a distance 's' and at a distance 'd' from the observer the angular separation ignoring the physical effects is given by

In the given question

light years
We know that in 1 light year there are 
Using the calculated values we get

Since π radians equals 180 degrees thus we have

Answer:
Porosity.
Explanation:
Describes the volume of void space in a rock, whereas POROSITY describes how easily fluid can flow through the rock.
I hope it helps! Have a great day!
<span>The best answer here is 'Land use'. This will help him establish what is already located at or adjacent to a site where someone is bringing forward a request that will impact the area.</span>
Can you insert a picture of the map?