Answers by Walter A
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Answers by Walter A

Answers by Walter A
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Why might ozone pollution or acid rain change an entire ecosystem
answered May 20, 2018
4 votes
142k views
The sum of four consecutive whole numbers is 230.Find the numbers.
answered Apr 13, 2018
6 votes
235k views
What effects has the conflict in Pakistan had on families?
answered Mar 18, 2018
1 vote
113k views
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