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.
This day is known as The Battle of Dien Bin Phu, where the Viet Minh forces won over the French. The Geneva Accords were signed later as a result of this and the correct answer is:
The Vietminh laid <span>siege to a garrison of French troops who then surrendered. </span>
D. animals and also plants use photosynthesis the store energy and use other energy in food
There were many jobs to be done in an Anglo-Saxon village, such as chopping firewood, churning butter and grinding flour. A typical village would have a metal forger and a builder. Children didn't have time to play as there were lots of jobs to do to help their families.
