Here is some more information on this linking word. Note the use of punctuation.
Linking word: As a result
Meaning: To talk about the effect of something; what happened because of another action
Common use 1: Connects between sentences
Grammar: Complete clause. Linking word + comma + complete clause
Example: Many farmers are using chemicals. As a result, local rivers are being polluted.
Common error: Many farmers are using chemicals as a result. Local rivers are being polluted.
Meaning: To talk about the effect of something; what happened because of another action
Common use 2: At the end of a sentence
Grammar: Complete clause. Complete clause + linking word
Example: Many farmers are using chemicals. Local rivers are being polluted as a result.
Common error: Many farmers are using chemicals, local rivers are being polluted as a result.