The literary device being used is Repetition.
Epimmonta then I guess, is this a riddle
Answer:
Some satellites help by investigating faraway objects that may be heading toward Earth.
Explanation:
The sentence that uses a synonym as a context clue to explain the meaning of the word <em>exploration</em> is: <em>Some satellites help by investigating faraway objects that may be heading toward Earth.</em><em> </em>
Synonyms are words that have similar or the same meaning. The synonym of the word <em>exploration</em> in the given case is <em>investigating</em>. These words don't have identical meanings, but both of them can help us understand what the other one means.
Visitors should prepare for a trip by bringing clothing for different types of weather
The entire second paragraph discusses how the different oceans/seas surrounding the park causes different weather. There can be dry air, blizzards, etc. which all cause a person to dress differently.
Hope it helps yah (. ❛ ᴗ ❛.)