Answer:
have fallen by more than one-half.
Explanation:
Thick, noticeable smog in many of the cities and manufacturing centers of the United States helped bring the 1970 e Clean Air Act to spur passage at the height of the national environmental movement. The ensuing modifications were intended to enhance its effectiveness and address newly recognized problems of air pollution such as acid rain and stratospheric ozone layer damage. The Clean Air Act allows EPA to set national environmental air quality levels for certain specific and prevalent contaminants, based on the latest research, to protect public health and welfare nationally. Certain main regulations are intended to reduce the rise in emissions from increasing motor vehicle numbers and new manufacturing plants.
b. A decrease in states’ rights
The consequences of the conflict between the native americans and the white settlers was that the proclamation line was put in place to keep peace
<span>The correct answer is B. The political party "approves" and assumes a "watchdog" function over its candidates indeed (like answer B says), but all the other 3 choices are quite extreme and manipulative methods, to adapt in case of grave transgression or records' blemishes. </span>
