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The following are the events in a story of how people have interacted with a landscape put into chronological order:
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1. Dense forest with large trees on steep hills: There were steep hills covered by forests made by large trees. The roots of these trees ceased soil erosion from happening.
2. Hand logging near lakes: People began to cut trees for wood but the pace was not as fact.
3. Mechanized logging throughout hills: Techniques of mechanized logging were developed and which helped in clearing the trees from over the hills within months.
4. Erosion fills lakes with silt: Clearing of forests from over the hills caused soil erosion and the silt from the hills flowed down with rainwater runoff.
United States have over 500 million people living
The scientists that are concerned about increased carbon dioxide in the atmosphere believe global warming is caused by human actions.
Explanation:
The global warming is a fact, but there is a big debate about the main causes of it. On one side are the scientists that believe that the human actions are the main cause of the global warming, on the other side are the scientists that believe it is strictly a natural process, and in the middle are the scientists that believe it is caused by both the human actions and the natural processes.
The scientists that believe that the global warming is caused by the human actions often discount the natural processes and their importance. The human actions increase the effect of the natural processes, but lot of scientists tend to exaggerate the human effect. If the trend of carbon dioxide input into the atmosphere by the human activity at this rate, then in the future it will most probably became a very important factor, while for now is relatively low when compared to the natural processes.
The majority of the carbon dioxide from the human activities comes from:
- burning of coal
- combustion of oil
- burning of wood
This is mainly done through:
- industry
- transportation
- agriculture
- heating of homes
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D)convergent is the answer
