Pollution can come from both natural sources and human activities depending on the type of pollutant.
<h3>What is pollution?</h3>
It is the release of substances into the environment to the extent that the well-being of plants, animals, and humans starts getting affected.
Substances that are released into the environment to the extent that they start affecting the organisms in the environment negatively are known as pollutants.
Pollutants can come from natural sources or as a result of human activities.
For example pollutants such as oxides of sulfur, methane, carbon dioxide, etc. can come from natural processes such as volcanic eruptions, activities of microbes, etc.
Pollutants such as oxides of carbon and sulfur can also be generated as a result of human activities such as the burning of coal, technological inventions, etc. 
More on pollution can be found here: brainly.com/question/23857736
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By not talking it out or not seeking help people can internalize it and make everything seem like their fault even though it's nobody's. Hope this help :)
        
             
        
        
        
Answer: can i pls get brainliest
i believe its river
Explanation:
A watershed is land that contributes water to a stream, river, lake, pond, wetland or other body of water. The boundary that separates one watershed from another, causing falling rain or melting snow or spring water to flow downhill in one direction or the other, is known as a “watershed divide”.
 
        
                    
             
        
        
        
Answer:
The correct answer will be- light independent reaction or Calvin cycle
Explanation:
The process of photosynthesis takes place in the two phases: light-dependent and light-independent phase.
The light-dependent phase form NADPH  and NADPH which are utilized during the light-independent phase to synthesise glucose molecule.
The light-independent phase occurs in the cytosol or stroma of the chloroplast in dark conditions which help synthesize the glucose molecules. The light-independent reaction is also known as the Calvin cycle which forms the glucose molecules in three steps- carboxylation, reduction and regeneration.
Thus, the Calvin cycle is the correct answer.