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Relief also known as terrain is the variations in elevation of a land surface. The relief of an area is the difference in elevation between the highest and lowest dimensions of the area.
Explanation:
The transfer of plants, animals, people, and diseases between hemispheres. This would be the correct answer!!!
Answer:
nowledge from any time period will always be helpful in some way. We are able to accomplish several things with the more knowledge we know. Knowledge from the past is still useful for is today for the reason that it can help us in present situations.
Information found in the past can teach us how to improve modern technology. Ideas are always being changed due to knowledge of the past such as changing from riding a horse to riding a car or from cooking on top of a fire to cooking on a stove. The knowledge from the past helped in the creation of modern ideas/creations.
Knowledge of the past will continue to be useful for us today and for us in the future. We will learn from past knowledge and use what we learned to create and help us in certain situations. Knowledge is a great gift and shall always be used to help the human race.
Explanation:
I hope this helps u! :D
Answer:
bad boy/girl, no cheating
anwer is 1.
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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.
