What are ways in which businesses pose a threat to the environment?

McDonalds was using a material called Polystyrene to package their food. What were the potential problems?
Are fast-food chains morally obligated to switch from polystyrene to paper package? Defend your answer.
How is the no Harm principle applicable here?
Is it ever acceptable for a business to put its employees or customers at risk? If not, why? If so, under what circumstances?
What are four conditions for rational risk assessment?
Why doesn’t the general public, for instance, expect ordinary automobiles to be as safe as airplanes?
Some jobs are inherently dangerous. But in some cases, people are desperate for a job. What can be done to ensure people do not take jobs that are unacceptably risky?
What is reckless negligence?
What are ways in which businesses pose a threat to the environment?
In dealing with environmental harm, what should be the guiding principle for businesses?