1.  What makes a good introduction?
2. What are the points of evaluation?
3. How is evaluation done?
4. How would you rate this essay?

Clearly states stand, short explanation of stand (state reason), briefly mentions the content that will be elaborated upon in the essay

Comparison of factors brought up in the question (e.g. sediment regime) with other factors that influence context (e.g. channel patterns, human activities and discharge)

Weighing extent of influence of each factor on the context given in the question (e.g. channel patterns)

100000/10, essay was very clear and a lot of content covered, argument is very compelling #slayed #guyboss

Introduction: Shaping of longitudinal profile of rivers already takes place even without the existence/contribution of human activities with the aid of other factors such as discharge due to variations in climate, sediment load and base level. Even though human activities are significant in impacting other factors that affect longitudinal profile of rivers, factors such as discharge due to variations in climate play a larger role in shaping the long profile of rivers. Therefore, this essay posits that human activities play a small part in shaping the longitudinal profile of rivers. 

Human activities disrupt the natural conditions of the drainage basin and hence alter natural factors (e.g. discharge, sediment load, base level), which then contributes to the shaping of longitudinal profile of rivers. 

Human activities such as the construction of dams affects the base level, which is a factor that influences the shape of long profiles of rivers. 

With the construction of a dam, the base level changes, then streams adjust their grade by changing their channel slope, or by changing their channel pattern, width, or roughness. In some cases, changes in base level is a result of river rejuvenation, which describes the condition where a river sustains or regains sufficient energy for continued or renewed vertical downcutting in its efforts to achieve a new lower base level to re-establish its long, smooth concave profile. 

Other than the base level, human activities also affect sediment load, one of the factors that contributes to shaping the long profile of rivers. With a dam constructed in rivers, the input of sediments is changed, which will change the river's long profile. 

Recently, the construction of dams have drastically reduced these sediment load and water discharges. It is estimated that the construction of dams has reduced the sediment fluxes of the Sebou and the Moulouya rivers by nearly 95 and 93% respectively. (Large and angular sediments due to lower velocity??)

https://link.springer.com/article/10.1007/s10113-001-0035-7#:~:text=Recently%2C%20the%20construction%20of%20dams,by%20nearly%2095%20and%2093%25.

However, climate is a key determinant of the general shape of the long profile of the river, of which cannot be affected by human activities. Changes in precipitation/discharge is a result of different climates such as humid and arid tropics, which will in turn change the shape of the long profile of the river. 

Precipitation is the input into the river system, thus any change in the amount of discharge reaching the river will affect the energy available hence the dominance of fluvial processes that will in turn shape its long profile. (Changes in precipitation as a result of different climates - humid vs arid)

Conclusion: In conclusion, human activities play a part in shaping the longitudinal profile of rivers as they regulate many natural conditions and factors that influence the river’s long profile such as base level and sediment load. However, as compared to discharge due to variations in climate, human activities play a small part in shaping the long profile of rivers as climate has a larger scale of impact and is not affected by human activities. Additionally, the shaping of longitudinal profiles of rivers can already take place even without the existence/contribution of human activities. Hence, it can be said that human activities are not of major significance when it comes to its influence on rivers’ long profiles.