The ____________________ line is the line above which summer ...

[sdfghj]

The ___________________ _ line is the line above which summer melting is insufficient to remove all of the preceding winters snowfall.
 Fill in the blank(s) with correct word

Question 2

Solar radiation received by the Earth system is called _______________, which is short for incoming solar radiation.
 Fill in the blank(s) with correct word

[dellikani2015]

Answer to Question 1

snow

Answer to Question 2

insolation

[sdfghj]

Excellent

[raili21]

Thanks for the timely response, appreciate it