Answer: The 4 ways human activities affect physical environment negatively is by driving vehicals and that causes Pollution and it harms the environment, persistent pollution problem (trash in the ocean) it harms the animals,oil pollution in the ocean and it harms and they can severely contaminate beaches and sediment, and cause serious harm to marine wildlife, the last thing is litter can also pollute the air.
Based on the information provided within the question it can be said that the request is illustrating the characteristic of problem-solving when policing. This is when an officer thinks and implements a solution to an existing problem within the community. Which is what the officer in this scenario did by asking the community to help clean up the streets which may in term make the area less prone to drug dealings.