What did the study in a Pennsylvania forest reveal about the environmental effects of using DDT?
Answer: Out of all the options presented above the one that best represents what the study in a Pennsylvania forest reveal about the environment effects of using DDT is answer choice C) DDT killed ladybugs, which caused the aphid population to rise.
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Answer:D
Explanation: If you look at the left side of the map el paso has both
U-boats were military submarines used by the Germans. While they were useful against warships, U-boats were the most effective in economic warfare by blockading coasts so resources could not be shipped to Germany's allies. WWI was the first major war that employed submarines in warfare.
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The correct answer is D. Political campaigns are self funded.
