Natural Resources
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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5
Check
Across:
1.
Have composition of 0.03% in atmosphere
3.
Have composition of 0.01% in atmosphere
4.
Have composition of 78% in atmosphere
5.
Have composition of 21% in atmosphere
Down:
2.
Have composition of 0.96% in atmosphere
OK