I think the answer is commas.
        
             
        
        
        
Military intelligence is a military discipline that uses information collection and analysis to provide guidance and assistance. 
The Main role is to provide the accurate  range of data in form of sources , mission requirements , planning and many other things related to missions. Area of Study includes many things like :
- Operational environment
- Hostile
- Friendly Forces
Intelligence  is concerned with board of issues such as economics, political assessments, military capability . A great deal of useful intelligence can be gathered  detailed high-altitude pictures of a country. Photointerpreters generally maintain catalogs of munitions factories, military bases and crate designs in order to interpret munition shipments and inventories.
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Dear sir,
I am writing to you to inform you about the dangers that pollution of water bodies can cause in the environment.
Polluting water bodies is bad for the aquatic animals and for human beings. Pollution of the water can lead to the death of aquatic animals like the fishes, crabs etc.
Furthermore, pollution can lead to several health conditions such as diarrhea, cholera, cough etc. It's important to keep the environment clean and water bodies safe. Pollution can also lead to cancer which can then lead to death.
In conclusion, I'll be grateful if the issue of pollution is addressed and the environment becomes better for everyone.
Yours faithfully, 
John. 
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