Answer:

Explanation:
The valance of magnesium atom is
While the valence of nitrogen atom is 
Let us first write the first half-reactions

The second half reaction is

Adding the above two reactions and writing the final reaction, we get -

The balance equation is

1 miles = 1609.344 m
1 hour = 60 min x 60 sec = 3600 s
30 miles 1 hr 1609.344 m
_______ x ______ x __________= 13.412m/s
1 hr 3600 s 1 miles
Answer:
Because Scientists Uses hypothesis and try tests and try proving their points while regular normal people use it to just state a statement
An acquired trait is a trait developed through learning. (: