What are businsses responsibilities toward the environment?use less energy, less hurmful tools,

There is an ethical and moral responsibility businesses have, but it is difficult to enforce.  There is also a practical responsibility.

Businesses, especially those that consume resources, have an ethical and moral responsibility to use those resources and to dispose of wastes in a way that does not harm employees or the citizens that live where that business does.

Businesses that do not do so are fundamentally unsustainable.  These companies need clean air, clean water, and a healthy workforce.  The environment affects all of those things.

From a practical standpoint, businesses will be more profitable in the long run if they are sustainable in terms of resources.