Answer: Rivers provide great and easy shipping routes and transportation of both goods and passengers.
Explanation:
Answer:I hope this help you out
Explanation:
One reason that many big cities are located along the bank of a river is because rivers have historically provided transportation as well as a source of water for drinking, agriculture, and industry. Additionally, rivers can be used for fishing, which has been an important food source for cities throughout history. Another reason is that the flat land around a river is often more accessible and easier to build on than hilly or mountainous terrain. Finally, rivers have traditionally been used for disposing of waste and sewage, which can be carried away downstream rather than accumulating in the city.
Three reasons why lron cannot be used to make a replacement joint
Iron's susceptibility to corrosion, poor biocompatibility, and lack of mechanical strength make it unsuitable for use in replacement joints.
First of all, iron is very prone to corrosion when exposed to moisture and oxygen, which might eventually cause the joint to degrade. The joint may become unsuitable for long-term usage in the human body due to corrosion, which can degrade the joint's structural integrity and affect its functionality.
Second, iron has poor biocompatibility, which means that when it comes into touch with live tissues, it may result in unfavourable reactions and tissue responses. This may cause inflammation, immunological reactions, and even the immune system of the body rejecting the joint. Materials with strong biocompatibility are selected to guarantee a successful replacement joint to reduce the risk of problems and enhance patient outcomes.
The mechanical strength needed for a replacement joint is also lacking in iron. In order to endure the loads and forces that joints are subjected to during movement, a material must be strong enough. Iron is a powerful metal, but it might not have the best mechanical qualities, such as high tensile strength, fatigue resistance, and longevity, needed for a joint replacement.
These factors lead to the use of other materials, such as titanium alloys or cobalt-chromium alloys, which provide higher corrosion resistance, biocompatibility, and mechanical qualities suited for long-term usage in the human body.
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