The Arkansas River is considered a tributary of the Mississippi River because I believe it is because the Arkansas River flows into the Mississippi which then flows into the sea.
(Xm,Ym)= (X1+X2/2, Y1+Y2/2)
(7+-1/2, -3+9/2)
(6/2, 6/2)
(3,3)
The matching coastlines of the continents of Alfred Wegener was not seen as serious as it was not a real proof of anything, and it also was very limited.
Explanation:
Alfred Wegener is the person that developed and promoted the continental drift theory. His theory was based around numerous evidence, and while some of those evidence were good indicators on their own, some were not, and they were not good enough on their own.
One of the evidence were the matching coastlines of the continents. This on its own wasn't good enough evidence, as it could have easily been just a coincidence that some coastlines match. Also, this was based on the matching coastlines of only two continents, Africa (its western part) and South America (its eastern part). The other continents didn't seemed to have matching coastlines as these two, which was just another reason for the other scientists to claim that it is a coincidence.
Some of the other evidence that Wegener used for his theory were:
- fossils
- mid-ocean ridge (spreading zones)
- matching rock strata from different continents
Learn more about the problems the continental drift theory faced at first brainly.com/question/7435218
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Answer:
When you think of environmental pollution, it typically comes in seven different types. These include air, water, land, radioactive, thermal, light, and sound pollution. Explore the definition and causes of each type of pollution.
When flying long distances, a world aeronautical chart (WAC) for the determination of height, position,alternative landing areas,airspace boundaries and radio frequencies.
<u>Explanation:</u>
For those aircraft flying at higher distances, WAC is used for the purpose of navigation. This chart is very helpful in finding current position, alternate routes, safe heights for flying,etc. It also helps in choosing the best alternate route for reaching the desired location. It provides the person flying at higher distances with that of radio frequencies and airspace boundary.
Strategic planning can be done for flights with this chart. Using this chart we can view the whole area of flying. There is a revision of these charts every year but for the areas like Mexico and Caribbean since the revision takes place once in 2 years.
