2. DDT and other pesticides used over 50 years ago are still affecting the environment today.Scientists have found these substances in recent glacier runoff. Glacier runoff occurs during the summer.when precipitation that has fallen on glaciers during the winter is Ice layers from existing glaciers have been analyzed. The results of this analysis show that the concentrations of DDT and other pesticides were highest about 10 years after the use of these substances was banned This information shows that: A. DDT and other pesticides cause glacier runoff during the summer. B. it takes humans over 50 years to analyze a glacier. C. precipitation helps to break down pesticides. D. the decision of one human generation may have an impact on future

## Step 1<br />The problem presents a scenario where DDT and other pesticides, which were used over 50 years ago, are still affecting the environment today. The evidence provided includes the fact that these substances have been found in recent glacier runoff and that the concentrations of these substances were highest about 10 years after their use was banned.<br /><br />## Step 2<br />The question asks us to interpret this information. The options provided are:<br />A. DDT and other pesticides cause glacier runoff during the summer.<br />B. it takes humans over 50 years to analyze a glacier.<br />C. precipitation helps to break down pesticides.<br />D. the decision of one human generation may have an impact on future.<br /><br />## Step 3<br />We need to choose the option that best fits the information provided. <br /><br />## Step 4<br />Option A is incorrect because the passage does not suggest that DDT and other pesticides cause glacier runoff during the summer.<br /><br />## Step 5<br />Option B is incorrect because the passage does not suggest that it takes humans over 50 years to analyze a glacier.<br /><br />## Step 6<br />Option C is incorrect because the passage does not suggest that precipitation helps to break down pesticides.<br /><br />## Step 7<br />Option D is correct because the passage suggests that the decision of one human generation (to use DDT and other pesticides) may have an impact on future generations, as evidenced by the fact that these substances are still affecting the environment today.