There is really nothing wrong with I look forward to hearing from you - but only if you really are looking forward to it. For something with a different tone you could try: If you have any questions, please don't hesitate to contact me.
Therefore, human causes of eutrophication include the use of agricultural fertilizers. Other causes include sewage and aquaculture, which is the growing or farming of fish, shellfish and aquatic plants. Wastewater from certain industries and burning fossil fuels can also contribute to eutrophication.
Consequently, lakes are particularly susceptible to pollution such as artificial eutrophication. The main causes of eutrophication are. 1  natural run-off of nutrients from the soil and the weathering of rocks. 2  run-off of inorganic fertiliser (containing nitrates and phosphates).3  run-off of manure from farms (containing nitrates, phosphates and ammonia).lthough eutrophication is a natural process in the aging of lakes and some estuaries, human activities can greatly accelerate eutrophication by increasing the rate at which nutrients and organic substances enter aquatic ecosystems from their surrounding watersheds.